654145128 has 96 divisors (see below), whose sum is σ = 2180505600. Its totient is φ = 172520064.

The previous prime is 654145127. The next prime is 654145207. The reversal of 654145128 is 821541456.

It is a happy number.

It is a super-2 number, since 2×654145128² = 855811696972272768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 654145092 and 654145101.

It is not an unprimeable number, because it can be changed into a prime (654145127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43368 + ... + 56471.

It is an arithmetic number, because the mean of its divisors is an integer number (22713600).

Almost surely, 2^654145128 is an apocalyptic number.

It is an amenable number.

654145128 is an abundant number, since it is smaller than the sum of its proper divisors (1526360472).

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

654145128 is a wasteful number, since it uses less digits than its factorization.

654145128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99871 (or 99864 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 654145128 is about 25576.2610246299. The cubic root of 654145128 is about 868.0765751778.

The spelling of 654145128 in words is "six hundred fifty-four million, one hundred forty-five thousand, one hundred twenty-eight".