18260772 has 12 divisors (see below), whose sum is σ = 42608496. Its totient is φ = 6086920.

The previous prime is 18260743. The next prime is 18260789. The reversal of 18260772 is 27706281.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760854 + ... + 760877.

It is an arithmetic number, because the mean of its divisors is an integer number (3550708).

Almost surely, 2^18260772 is an apocalyptic number.

18260772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18260772 is an abundant number, since it is smaller than the sum of its proper divisors (24347724).

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

18260772 is a wasteful number, since it uses less digits than its factorization.

18260772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521738 (or 1521736 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 18260772 is about 4273.2624539104. The cubic root of 18260772 is about 263.3336616279. Note that the first 3 decimals are identical.

The spelling of 18260772 in words is "eighteen million, two hundred sixty thousand, seven hundred seventy-two".