138752284 has 48 divisors (see below), whose sum is σ = 278401536. Its totient is φ = 59892800.

The previous prime is 138752281. The next prime is 138752287. The reversal of 138752284 is 482257831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138752281) and next prime (138752287).

Its product of digits (107520) is a multiple of the sum of its prime divisors (1024).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138752281) 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, 168594 + ... + 169414.

It is an arithmetic number, because the mean of its divisors is an integer number (5800032).

Almost surely, 2^138752284 is an apocalyptic number.

It is an amenable number.

138752284 is an abundant number, since it is smaller than the sum of its proper divisors (139649252).

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

138752284 is a wasteful number, since it uses less digits than its factorization.

138752284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1024 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 138752284 is about 11779.3159393914. The cubic root of 138752284 is about 517.7022433703.

The spelling of 138752284 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, two hundred eighty-four".