138302475 has 12 divisors (see below), whose sum is σ = 228660216. Its totient is φ = 73761280.

The previous prime is 138302467. The next prime is 138302477. The reversal of 138302475 is 574203831.

It is not a de Polignac number, because 138302475 - 2³ = 138302467 is a prime.

It is a super-2 number, since 2×138302475² = 38255149182251250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138302477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921942 + ... + 922091.

It is an arithmetic number, because the mean of its divisors is an integer number (19055018).

Almost surely, 2^138302475 is an apocalyptic number.

138302475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138302475 is a deficient number, since it is larger than the sum of its proper divisors (90357741).

138302475 is a wasteful number, since it uses less digits than its factorization.

138302475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844046 (or 1844041 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 138302475 is about 11760.2072685816. The cubic root of 138302475 is about 517.1422064155.

The spelling of 138302475 in words is "one hundred thirty-eight million, three hundred two thousand, four hundred seventy-five".