138254874 has 8 divisors (see below), whose sum is σ = 276509760. Its totient is φ = 46084956.

The previous prime is 138254869. The next prime is 138254923. The reversal of 138254874 is 478452831.

It is a sphenic number, since it is the product of 3 distinct primes.

138254874 is an admirable number.

It is a super-2 number, since 2×138254874² = 38228820369511752, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11521234 + ... + 11521245.

It is an arithmetic number, because the mean of its divisors is an integer number (34563720).

Almost surely, 2^138254874 is an apocalyptic number.

138254874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138254874 is a wasteful number, since it uses less digits than its factorization.

138254874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23042484.

The product of its digits is 215040, while the sum is 42.

The square root of 138254874 is about 11758.1832780409. The cubic root of 138254874 is about 517.0828695384.

It can be divided in two parts, 138254 and 874, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 138254874 in words is "one hundred thirty-eight million, two hundred fifty-four thousand, eight hundred seventy-four".