137281380 has 48 divisors (see below), whose sum is σ = 385465920. Its totient is φ = 36505728.

The previous prime is 137281373. The next prime is 137281393. The reversal of 137281380 is 83182731.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19722 + ... + 25758.

It is an arithmetic number, because the mean of its divisors is an integer number (8030540).

Almost surely, 2^137281380 is an apocalyptic number.

137281380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137281380 is an abundant number, since it is smaller than the sum of its proper divisors (248184540).

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

137281380 is a wasteful number, since it uses less digits than its factorization.

137281380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6428 (or 6426 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 137281380 is about 11716.7137030824. The cubic root of 137281380 is about 515.8663646485.

The spelling of 137281380 in words is "one hundred thirty-seven million, two hundred eighty-one thousand, three hundred eighty".