137489620 has 24 divisors (see below), whose sum is σ = 289031400. Its totient is φ = 54938112.

The previous prime is 137489549. The next prime is 137489621. The reversal of 137489620 is 26984731.

It can be written as a sum of positive squares in 4 ways, for example, as 646416 + 136843204 = 804^2 + 11698^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137489621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19536 + ... + 25624.

It is an arithmetic number, because the mean of its divisors is an integer number (12042975).

Almost surely, 2^137489620 is an apocalyptic number.

137489620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137489620 is an abundant number, since it is smaller than the sum of its proper divisors (151541780).

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

137489620 is a wasteful number, since it uses less digits than its factorization.

137489620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227 (or 7225 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 137489620 is about 11725.5967865179. The cubic root of 137489620 is about 516.1270694406.

The spelling of 137489620 in words is "one hundred thirty-seven million, four hundred eighty-nine thousand, six hundred twenty".