138504435 has 32 divisors (see below), whose sum is σ = 236666880. Its totient is φ = 69014400.

The previous prime is 138504427. The next prime is 138504449. The reversal of 138504435 is 534405831.

It is not a de Polignac number, because 138504435 - 2³ = 138504427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138504396 and 138504405.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8350 + ... + 18620.

It is an arithmetic number, because the mean of its divisors is an integer number (7395840).

Almost surely, 2^138504435 is an apocalyptic number.

138504435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138504435 is a deficient number, since it is larger than the sum of its proper divisors (98162445).

138504435 is a wasteful number, since it uses less digits than its factorization.

138504435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10339.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 138504435 is about 11768.7907195259. The cubic root of 138504435 is about 517.3938077048.

The spelling of 138504435 in words is "one hundred thirty-eight million, five hundred four thousand, four hundred thirty-five".