138571896 has 32 divisors (see below), whose sum is σ = 366809040. Its totient is φ = 43473408.

The previous prime is 138571871. The next prime is 138571897. The reversal of 138571896 is 698175831.

138571896 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138571896² = 38404340722069632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138571897) 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, 169411 + ... + 170226.

Almost surely, 2^138571896 is an apocalyptic number.

It is an amenable number.

138571896 is an abundant number, since it is smaller than the sum of its proper divisors (228237144).

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

138571896 is a wasteful number, since it uses less digits than its factorization.

138571896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339663 (or 339659 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 138571896 is about 11771.6564679743. The cubic root of 138571896 is about 517.4777959621.

It can be divided in two parts, 13857 and 1896, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 138571896 in words is "one hundred thirty-eight million, five hundred seventy-one thousand, eight hundred ninety-six".