137823240 has 32 divisors (see below), whose sum is σ = 413470080. Its totient is φ = 36752832.

The previous prime is 137823239. The next prime is 137823251. The reversal of 137823240 is 42328731.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 137823198 and 137823207.

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, 574144 + ... + 574383.

It is an arithmetic number, because the mean of its divisors is an integer number (12920940).

Almost surely, 2^137823240 is an apocalyptic number.

137823240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137823240 is an abundant number, since it is smaller than the sum of its proper divisors (275646840).

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

137823240 is a wasteful number, since it uses less digits than its factorization.

137823240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148541 (or 1148537 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 137823240 is about 11739.8143085826. The cubic root of 137823240 is about 516.5441948122.

The spelling of 137823240 in words is "one hundred thirty-seven million, eight hundred twenty-three thousand, two hundred forty".