18764712 has 48 divisors (see below), whose sum is σ = 51480000. Its totient is φ = 6173856.

The previous prime is 18764699. The next prime is 18764729. The reversal of 18764712 is 21746781.

18764712 is a `hidden beast` number, since 1 + 8 + 7 + 647 + 1 + 2 = 666.

It is a super-2 number, since 2×18764712² = 704228832885888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4039 + ... + 7337.

It is an arithmetic number, because the mean of its divisors is an integer number (1072500).

Almost surely, 2^18764712 is an apocalyptic number.

18764712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18764712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25740000).

18764712 is an abundant number, since it is smaller than the sum of its proper divisors (32715288).

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

18764712 is a wasteful number, since it uses less digits than its factorization.

18764712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390 (or 3383 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 18764712 is about 4331.8254812492. The cubic root of 18764712 is about 265.7341078320.

The spelling of 18764712 in words is "eighteen million, seven hundred sixty-four thousand, seven hundred twelve".