7551232428 has 12 divisors (see below), whose sum is σ = 17619542360. Its totient is φ = 2517077472.

The previous prime is 7551232417. The next prime is 7551232457. The reversal of 7551232428 is 8242321557.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7551232428² (a number of 21 digits) contains 22 as substring.

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, 314634673 + ... + 314634696.

Almost surely, 2^7551232428 is an apocalyptic number.

It is an amenable number.

7551232428 is an abundant number, since it is smaller than the sum of its proper divisors (10068309932).

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

7551232428 is a wasteful number, since it uses less digits than its factorization.

7551232428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629269376 (or 629269374 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 7551232428 is about 86897.8275217511. The cubic root of 7551232428 is about 1961.8807807346.

It can be divided in two parts, 75 and 51232428, that added together give a triangular number (51232503 = T₁₀₁₂₂).

The spelling of 7551232428 in words is "seven billion, five hundred fifty-one million, two hundred thirty-two thousand, four hundred twenty-eight".