538391672 has 32 divisors (see below), whose sum is σ = 1242444000. Its totient is φ = 212989824.

The previous prime is 538391671. The next prime is 538391681. The reversal of 538391672 is 276193835.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538391671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369047 + ... + 370502.

It is an arithmetic number, because the mean of its divisors is an integer number (38826375).

Almost surely, 2^538391672 is an apocalyptic number.

538391672 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

538391672 is an abundant number, since it is smaller than the sum of its proper divisors (704052328).

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

538391672 is a wasteful number, since it uses less digits than its factorization.

538391672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739575 (or 739571 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 538391672 is about 23203.2685628555. The cubic root of 538391672 is about 813.5160228929.

The spelling of 538391672 in words is "five hundred thirty-eight million, three hundred ninety-one thousand, six hundred seventy-two".