18240372024 has 32 divisors (see below), whose sum is σ = 52115349120. Its totient is φ = 5211534816.

The previous prime is 18240372023. The next prime is 18240372061. The reversal of 18240372024 is 42027304281.

It is a happy number.

It is a super-2 number, since 2×18240372024² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18240372023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54286654 + ... + 54286989.

It is an arithmetic number, because the mean of its divisors is an integer number (1628604660).

Almost surely, 2^18240372024 is an apocalyptic number.

18240372024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18240372024 is an abundant number, since it is smaller than the sum of its proper divisors (33874977096).

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

18240372024 is a wasteful number, since it uses less digits than its factorization.

18240372024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108573659 (or 108573655 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The spelling of 18240372024 in words is "eighteen billion, two hundred forty million, three hundred seventy-two thousand, twenty-four".