138472627 has 16 divisors (see below), whose sum is σ = 152640000. Its totient is φ = 125271432.

The previous prime is 138472591. The next prime is 138472637. The reversal of 138472627 is 726274831.

It is not a de Polignac number, because 138472627 - 2¹⁵ = 138439859 is a prime.

It is a super-2 number, since 2×138472627² = 38349336856562258, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 138472627.

It is not an unprimeable number, because it can be changed into a prime (138472637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230874 + ... + 231472.

It is an arithmetic number, because the mean of its divisors is an integer number (9540000).

Almost surely, 2^138472627 is an apocalyptic number.

138472627 is a deficient number, since it is larger than the sum of its proper divisors (14167373).

138472627 is an frugal number, since it uses more digits than its factorization.

138472627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 641 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 138472627 is about 11767.4392711414. The cubic root of 138472627 is about 517.3541976081.

The spelling of 138472627 in words is "one hundred thirty-eight million, four hundred seventy-two thousand, six hundred twenty-seven".