137947506 has 16 divisors (see below), whose sum is σ = 280013664. Its totient is φ = 45296064.

The previous prime is 137947463. The next prime is 137947529. The reversal of 137947506 is 605749731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171175 + ... + 171978.

It is an arithmetic number, because the mean of its divisors is an integer number (17500854).

Almost surely, 2^137947506 is an apocalyptic number.

137947506 is an abundant number, since it is smaller than the sum of its proper divisors (142066158).

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

137947506 is a wasteful number, since it uses less digits than its factorization.

137947506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343225.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 137947506 is about 11745.1056189376. The cubic root of 137947506 is about 516.6993926317.

The spelling of 137947506 in words is "one hundred thirty-seven million, nine hundred forty-seven thousand, five hundred six".