1390895128 has 32 divisors (see below), whose sum is σ = 2982620160. Its totient is φ = 595671840.

The previous prime is 1390895117. The next prime is 1390895141. The reversal of 1390895128 is 8215980931.

It is a congruent number.

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, 77625 + ... + 93847.

It is an arithmetic number, because the mean of its divisors is an integer number (93206880).

Almost surely, 2^1390895128 is an apocalyptic number.

It is an amenable number.

1390895128 is an abundant number, since it is smaller than the sum of its proper divisors (1591725032).

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

1390895128 is a wasteful number, since it uses less digits than its factorization.

1390895128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17767 (or 17763 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 1390895128 is about 37294.7064340236. The cubic root of 1390895128 is about 1116.2585420358.

The spelling of 1390895128 in words is "one billion, three hundred ninety million, eight hundred ninety-five thousand, one hundred twenty-eight".