7575428 has 12 divisors (see below), whose sum is σ = 15150912. Its totient is φ = 3246600.

The previous prime is 7575401. The next prime is 7575461. The reversal of 7575428 is 8245757.

7575428 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 7575391 and 7575400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135248 + ... + 135303.

It is an arithmetic number, because the mean of its divisors is an integer number (1262576).

Almost surely, 2^7575428 is an apocalyptic number.

It is an amenable number.

7575428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7575428 is a wasteful number, since it uses less digits than its factorization.

7575428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270562 (or 270560 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 7575428 is about 2752.3495417552. The cubic root of 7575428 is about 196.3973958615.

Adding to 7575428 its product of digits (78400), we get a triangular number (7653828 = T₃₉₁₂).

The spelling of 7575428 in words is "seven million, five hundred seventy-five thousand, four hundred twenty-eight".