137213784 has 32 divisors (see below), whose sum is σ = 381150000. Its totient is φ = 45737856.

The previous prime is 137213777. The next prime is 137213807. The reversal of 137213784 is 487312731.

137213784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 317409 + ... + 317840.

Almost surely, 2^137213784 is an apocalyptic number.

It is an amenable number.

137213784 is an abundant number, since it is smaller than the sum of its proper divisors (243936216).

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

137213784 is a wasteful number, since it uses less digits than its factorization.

137213784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635264 (or 635254 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 137213784 is about 11713.8287506690. The cubic root of 137213784 is about 515.7816815749.

The spelling of 137213784 in words is "one hundred thirty-seven million, two hundred thirteen thousand, seven hundred eighty-four".