137444820 has 24 divisors (see below), whose sum is σ = 384845664. Its totient is φ = 36651936.

The previous prime is 137444819. The next prime is 137444863. The reversal of 137444820 is 28444731.

It is a congruent number.

It is an unprimeable number.

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, 1145314 + ... + 1145433.

It is an arithmetic number, because the mean of its divisors is an integer number (16035236).

Almost surely, 2^137444820 is an apocalyptic number.

137444820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137444820 is an abundant number, since it is smaller than the sum of its proper divisors (247400844).

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

137444820 is a wasteful number, since it uses less digits than its factorization.

137444820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290759 (or 2290757 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 137444820 is about 11723.6862803472. The cubic root of 137444820 is about 516.0710045910.

The spelling of 137444820 in words is "one hundred thirty-seven million, four hundred forty-four thousand, eight hundred twenty".