137520280 has 16 divisors (see below), whose sum is σ = 309420720. Its totient is φ = 55008096.

The previous prime is 137520221. The next prime is 137520281. The reversal of 137520280 is 82025731.

It is a super-2 number, since 2×137520280² = 37823654822556800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137520281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1718964 + ... + 1719043.

It is an arithmetic number, because the mean of its divisors is an integer number (19338795).

Almost surely, 2^137520280 is an apocalyptic number.

137520280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137520280 is an abundant number, since it is smaller than the sum of its proper divisors (171900440).

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

137520280 is a wasteful number, since it uses less digits than its factorization.

137520280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438018 (or 3438014 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 137520280 is about 11726.9041097811. The cubic root of 137520280 is about 516.1654318029.

The spelling of 137520280 in words is "one hundred thirty-seven million, five hundred twenty thousand, two hundred eighty".