137765730 has 32 divisors (see below), whose sum is σ = 334828800. Its totient is φ = 36271872.

The previous prime is 137765723. The next prime is 137765731. The reversal of 137765730 is 37567731.

It is not an unprimeable number, because it can be changed into a prime (137765731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26695 + ... + 31434.

It is an arithmetic number, because the mean of its divisors is an integer number (10463400).

Almost surely, 2^137765730 is an apocalyptic number.

137765730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137765730 is an abundant number, since it is smaller than the sum of its proper divisors (197063070).

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

137765730 is a wasteful number, since it uses less digits than its factorization.

137765730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58218.

The product of its (nonzero) digits is 92610, while the sum is 39.

The square root of 137765730 is about 11737.3646957058. The cubic root of 137765730 is about 516.4723380641.

The spelling of 137765730 in words is "one hundred thirty-seven million, seven hundred sixty-five thousand, seven hundred thirty".