6451224 has 128 divisors (see below), whose sum is σ = 19353600. Its totient is φ = 1774080.

The previous prime is 6451223. The next prime is 6451231. The reversal of 6451224 is 4221546.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 6451194 and 6451203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6451223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208089 + ... + 208119.

It is an arithmetic number, because the mean of its divisors is an integer number (151200).

Almost surely, 2^6451224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6451224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9676800).

6451224 is an abundant number, since it is smaller than the sum of its proper divisors (12902376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6451224 is a wasteful number, since it uses less digits than its factorization.

6451224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 101 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 6451224 is about 2539.9259831735. The cubic root of 6451224 is about 186.1575725656.

The spelling of 6451224 in words is "six million, four hundred fifty-one thousand, two hundred twenty-four".