18348072 has 32 divisors (see below), whose sum is σ = 48285600. Its totient is φ = 5793984.

The previous prime is 18348061. The next prime is 18348103. The reversal of 18348072 is 27084381.

It is a super-2 number, since 2×18348072² = 673303492234368, which contains 22 as substring.

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, 19663 + ... + 20574.

It is an arithmetic number, because the mean of its divisors is an integer number (1508925).

Almost surely, 2^18348072 is an apocalyptic number.

18348072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18348072 is an abundant number, since it is smaller than the sum of its proper divisors (29937528).

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

18348072 is a wasteful number, since it uses less digits than its factorization.

18348072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40265 (or 40261 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 18348072 is about 4283.4649525822. The cubic root of 18348072 is about 263.7526379048.

The spelling of 18348072 in words is "eighteen million, three hundred forty-eight thousand, seventy-two".