890642368 has 56 divisors (see below), whose sum is σ = 2203484544. Its totient is φ = 347001600.

The previous prime is 890642353. The next prime is 890642381. The reversal of 890642368 is 863246098.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

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, 85438 + ... + 95293.

Almost surely, 2^890642368 is an apocalyptic number.

890642368 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

890642368 is an abundant number, since it is smaller than the sum of its proper divisors (1312842176).

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

890642368 is a wasteful number, since it uses less digits than its factorization.

890642368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180761 (or 180751 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 890642368 is about 29843.6319505519. The cubic root of 890642368 is about 962.1315368855.

The spelling of 890642368 in words is "eight hundred ninety million, six hundred forty-two thousand, three hundred sixty-eight".