137702780 has 12 divisors (see below), whose sum is σ = 289175880. Its totient is φ = 55081104.

The previous prime is 137702753. The next prime is 137702797. The reversal of 137702780 is 87207731.

137702780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×137702780³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 137702780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3442550 + ... + 3442589.

It is an arithmetic number, because the mean of its divisors is an integer number (24097990).

Almost surely, 2^137702780 is an apocalyptic number.

137702780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137702780 is an abundant number, since it is smaller than the sum of its proper divisors (151473100).

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

137702780 is a wasteful number, since it uses less digits than its factorization.

137702780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885148 (or 6885146 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 137702780 is about 11734.6827822485. The cubic root of 137702780 is about 516.3936612967.

The spelling of 137702780 in words is "one hundred thirty-seven million, seven hundred two thousand, seven hundred eighty".