18724074 has 16 divisors (see below), whose sum is σ = 37527840. Its totient is φ = 6228080.

The previous prime is 18724067. The next prime is 18724081. The reversal of 18724074 is 47042781.

It is an interprime number because it is at equal distance from previous prime (18724067) and next prime (18724081).

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, 12 + ... + 6119.

It is an arithmetic number, because the mean of its divisors is an integer number (2345490).

Almost surely, 2^18724074 is an apocalyptic number.

18724074 is an abundant number, since it is smaller than the sum of its proper divisors (18803766).

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

18724074 is a wasteful number, since it uses less digits than its factorization.

18724074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 18724074 is about 4327.1323067362. The cubic root of 18724074 is about 265.5421392111.

The spelling of 18724074 in words is "eighteen million, seven hundred twenty-four thousand, seventy-four".