137401820 has 24 divisors (see below), whose sum is σ = 305517744. Its totient is φ = 51727616.

The previous prime is 137401807. The next prime is 137401843. The reversal of 137401820 is 28104731.

It is a self number, because there is not a number n which added to its sum of digits gives 137401820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201722 + ... + 202401.

It is an arithmetic number, because the mean of its divisors is an integer number (12729906).

Almost surely, 2^137401820 is an apocalyptic number.

137401820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137401820 is an abundant number, since it is smaller than the sum of its proper divisors (168115924).

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

137401820 is a wasteful number, since it uses less digits than its factorization.

137401820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404149 (or 404147 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 137401820 is about 11721.8522427132. The cubic root of 137401820 is about 516.0171808874.

The spelling of 137401820 in words is "one hundred thirty-seven million, four hundred one thousand, eight hundred twenty".