538916628 has 96 divisors (see below), whose sum is σ = 1348824960. Its totient is φ = 167157760.

The previous prime is 538916557. The next prime is 538916629. The reversal of 538916628 is 826619835.

It is a happy number.

It is a super-2 number, since 2×538916628² = 580862263869780768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538916629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1526500 + ... + 1526852.

It is an arithmetic number, because the mean of its divisors is an integer number (14050260).

Almost surely, 2^538916628 is an apocalyptic number.

538916628 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538916628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674412480).

538916628 is an abundant number, since it is smaller than the sum of its proper divisors (809908332).

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

538916628 is a wasteful number, since it uses less digits than its factorization.

538916628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 535 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 538916628 is about 23214.5779199192. The cubic root of 538916628 is about 813.7803418598.

The spelling of 538916628 in words is "five hundred thirty-eight million, nine hundred sixteen thousand, six hundred twenty-eight".