138552016 has 10 divisors (see below), whose sum is σ = 268444562. Its totient is φ = 69276000.

The previous prime is 138551981. The next prime is 138552049. The reversal of 138552016 is 610255831.

It can be written as a sum of positive squares in only one way, i.e., 120912016 + 17640000 = 10996^2 + 4200^2 .

It is a super-2 number, since 2×138552016² = 38393322275328512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4329735 + ... + 4329766.

Almost surely, 2^138552016 is an apocalyptic number.

138552016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138552016 is a deficient number, since it is larger than the sum of its proper divisors (129892546).

138552016 is an equidigital number, since it uses as much as digits as its factorization.

138552016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8659509 (or 8659503 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 138552016 is about 11770.8120365589. The cubic root of 138552016 is about 517.4530483981.

The spelling of 138552016 in words is "one hundred thirty-eight million, five hundred fifty-two thousand, sixteen".