7251128 has 8 divisors (see below), whose sum is σ = 13595880. Its totient is φ = 3625560.

The previous prime is 7251091. The next prime is 7251143. The reversal of 7251128 is 8211527.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 7251097 and 7251106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453188 + ... + 453203.

It is an arithmetic number, because the mean of its divisors is an integer number (1699485).

Almost surely, 2^7251128 is an apocalyptic number.

It is an amenable number.

7251128 is a deficient number, since it is larger than the sum of its proper divisors (6344752).

7251128 is a wasteful number, since it uses less digits than its factorization.

7251128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906397 (or 906393 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 7251128 is about 2692.7918597619. The cubic root of 7251128 is about 193.5538690944.

The spelling of 7251128 in words is "seven million, two hundred fifty-one thousand, one hundred twenty-eight".