18923076 has 18 divisors (see below), whose sum is σ = 47833422. Its totient is φ = 6307680.

The previous prime is 18923039. The next prime is 18923123. The reversal of 18923076 is 67032981.

It can be written as a sum of positive squares in only one way, i.e., 18922500 + 576 = 4350^2 + 24^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 525641 = 18923076 / (1 + 8 + 9 + 2 + 3 + 0 + 7 + 6).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18923076.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 262785 + ... + 262856.

Almost surely, 2^18923076 is an apocalyptic number.

It is an amenable number.

18923076 is an abundant number, since it is smaller than the sum of its proper divisors (28910346).

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

18923076 is a wasteful number, since it uses less digits than its factorization.

18923076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525651 (or 525646 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 18923076 is about 4350.0662063927. The cubic root of 18923076 is about 266.4795652825.

The spelling of 18923076 in words is "eighteen million, nine hundred twenty-three thousand, seventy-six".