137734728 has 16 divisors (see below), whose sum is σ = 344336880. Its totient is φ = 45911568.

The previous prime is 137734693. The next prime is 137734739. The reversal of 137734728 is 827437731.

It is a self number, because there is not a number n which added to its sum of digits gives 137734728.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2869450 + ... + 2869497.

It is an arithmetic number, because the mean of its divisors is an integer number (21521055).

Almost surely, 2^137734728 is an apocalyptic number.

It is an amenable number.

137734728 is an abundant number, since it is smaller than the sum of its proper divisors (206602152).

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

137734728 is a wasteful number, since it uses less digits than its factorization.

137734728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738956 (or 5738952 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The square root of 137734728 is about 11736.0439671978. The cubic root of 137734728 is about 516.4335938456.

The spelling of 137734728 in words is "one hundred thirty-seven million, seven hundred thirty-four thousand, seven hundred twenty-eight".