137530820 has 24 divisors (see below), whose sum is σ = 330074304. Its totient is φ = 47153376.

The previous prime is 137530819. The next prime is 137530837. The reversal of 137530820 is 28035731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491042 + ... + 491321.

It is an arithmetic number, because the mean of its divisors is an integer number (13753096).

Almost surely, 2^137530820 is an apocalyptic number.

137530820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137530820 is an abundant number, since it is smaller than the sum of its proper divisors (192543484).

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

137530820 is a wasteful number, since it uses less digits than its factorization.

137530820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982379 (or 982377 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 137530820 is about 11727.3534951412. The cubic root of 137530820 is about 516.1786183299.

The spelling of 137530820 in words is "one hundred thirty-seven million, five hundred thirty thousand, eight hundred twenty".