137220772 has 24 divisors (see below), whose sum is σ = 258926976. Its totient is φ = 63254688.

The previous prime is 137220751. The next prime is 137220773. The reversal of 137220772 is 277022731.

It is not an unprimeable number, because it can be changed into a prime (137220773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81483 + ... + 83149.

It is an arithmetic number, because the mean of its divisors is an integer number (10788624).

Almost surely, 2^137220772 is an apocalyptic number.

It is an amenable number.

137220772 is a deficient number, since it is larger than the sum of its proper divisors (121706204).

137220772 is a wasteful number, since it uses less digits than its factorization.

137220772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3265 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 137220772 is about 11714.1270267997. The cubic root of 137220772 is about 515.7904373065.

The spelling of 137220772 in words is "one hundred thirty-seven million, two hundred twenty thousand, seven hundred seventy-two".