18890976 has 48 divisors (see below), whose sum is σ = 53406864. Its totient is φ = 5812224.

The previous prime is 18890969. The next prime is 18890983. The reversal of 18890976 is 67909881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18890969) and next prime (18890983).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 6321 + ... + 8816.

It is an arithmetic number, because the mean of its divisors is an integer number (1112643).

Almost surely, 2^18890976 is an apocalyptic number.

18890976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18890976 is an abundant number, since it is smaller than the sum of its proper divisors (34515888).

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

18890976 is a wasteful number, since it uses less digits than its factorization.

18890976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15163 (or 15155 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 18890976 is about 4346.3750413419. The cubic root of 18890976 is about 266.3287998812.

The spelling of 18890976 in words is "eighteen million, eight hundred ninety thousand, nine hundred seventy-six".