137785212 has 60 divisors (see below), whose sum is σ = 362177200. Its totient is φ = 45676224.

The previous prime is 137785183. The next prime is 137785253. The reversal of 137785212 is 212587731.

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

137785212 is a Rhonda number in base 10.

Its product of digits (23520) is a multiple of the sum of its prime factors (2352).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 63408 + ... + 65544.

Almost surely, 2^137785212 is an apocalyptic number.

137785212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137785212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181088600).

137785212 is an abundant number, since it is smaller than the sum of its proper divisors (224391988).

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

137785212 is a wasteful number, since it uses less digits than its factorization.

137785212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352 (or 2341 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 137785212 is about 11738.1945800877. The cubic root of 137785212 is about 516.4966823860.

The spelling of 137785212 in words is "one hundred thirty-seven million, seven hundred eighty-five thousand, two hundred twelve".