28018492 has 6 divisors (see below), whose sum is σ = 49032368. Its totient is φ = 14009244.

The previous prime is 28018481. The next prime is 28018493. The reversal of 28018492 is 29481082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28018493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3502308 + ... + 3502315.

Almost surely, 2^28018492 is an apocalyptic number.

It is an amenable number.

28018492 is a deficient number, since it is larger than the sum of its proper divisors (21013876).

28018492 is a wasteful number, since it uses less digits than its factorization.

28018492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004627 (or 7004625 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 28018492 is about 5293.2496634865. The cubic root of 28018492 is about 303.7257308140.

The spelling of 28018492 in words is "twenty-eight million, eighteen thousand, four hundred ninety-two".