531094428 has 48 divisors (see below), whose sum is σ = 1378236160. Its totient is φ = 176861232.

The previous prime is 531094427. The next prime is 531094469. The reversal of 531094428 is 824490135.

It is a super-2 number, since 2×531094428² = 564122582905294368, 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 = 531094392 and 531094401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531094427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165051 + ... + 168237.

Almost surely, 2^531094428 is an apocalyptic number.

It is an amenable number.

531094428 is an abundant number, since it is smaller than the sum of its proper divisors (847141732).

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

531094428 is a wasteful number, since it uses less digits than its factorization.

531094428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4743 (or 4735 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 531094428 is about 23045.4860656051. The cubic root of 531094428 is about 809.8238848932.

The spelling of 531094428 in words is "five hundred thirty-one million, ninety-four thousand, four hundred twenty-eight".