137207772 has 36 divisors (see below), whose sum is σ = 373511320. Its totient is φ = 42217632.

The previous prime is 137207743. The next prime is 137207773. The reversal of 137207772 is 277702731.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137207773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146122 + ... + 147057.

Almost surely, 2^137207772 is an apocalyptic number.

137207772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

137207772 is an abundant number, since it is smaller than the sum of its proper divisors (236303548).

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

137207772 is a wasteful number, since it uses less digits than its factorization.

137207772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293202 (or 293197 counting only the distinct ones).

The product of its (nonzero) digits is 28812, while the sum is 36.

The square root of 137207772 is about 11713.5721280914. The cubic root of 137207772 is about 515.7741485009.

The spelling of 137207772 in words is "one hundred thirty-seven million, two hundred seven thousand, seven hundred seventy-two".