137903128 has 32 divisors (see below), whose sum is σ = 291179520. Its totient is φ = 60660000.

The previous prime is 137903069. The next prime is 137903137. The reversal of 137903128 is 821309731.

It is a junction number, because it is equal to n+sod(n) for n = 137903093 and 137903102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22548 + ... + 28003.

It is an arithmetic number, because the mean of its divisors is an integer number (9099360).

Almost surely, 2^137903128 is an apocalyptic number.

It is an amenable number.

137903128 is an abundant number, since it is smaller than the sum of its proper divisors (153276392).

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

137903128 is a wasteful number, since it uses less digits than its factorization.

137903128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50599 (or 50595 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 137903128 is about 11743.2162545020. The cubic root of 137903128 is about 516.6439789321.

The spelling of 137903128 in words is "one hundred thirty-seven million, nine hundred three thousand, one hundred twenty-eight".