18072692 has 24 divisors (see below), whose sum is σ = 34618752. Its totient is φ = 8187200.

The previous prime is 18072679. The next prime is 18072697. The reversal of 18072692 is 29627081.

It is a happy number.

It is a super-2 number, since 2×18072692² = 653244392253728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18072697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18488 + ... + 19440.

It is an arithmetic number, because the mean of its divisors is an integer number (1442448).

Almost surely, 2^18072692 is an apocalyptic number.

It is an amenable number.

18072692 is a deficient number, since it is larger than the sum of its proper divisors (16546060).

18072692 is a wasteful number, since it uses less digits than its factorization.

18072692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 18072692 is about 4251.1988897251. The cubic root of 18072692 is about 262.4264561925.

The spelling of 18072692 in words is "eighteen million, seventy-two thousand, six hundred ninety-two".