18992064 has 112 divisors (see below), whose sum is σ = 61902848. Its totient is φ = 5004288.

The previous prime is 18992059. The next prime is 18992087. The reversal of 18992064 is 46029981.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16929 + ... + 18015.

It is an arithmetic number, because the mean of its divisors is an integer number (552704).

Almost surely, 2^18992064 is an apocalyptic number.

18992064 is a gapful number since it is divisible by the number (14) 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 18992064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30951424).

18992064 is an abundant number, since it is smaller than the sum of its proper divisors (42910784).

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

18992064 is a wasteful number, since it uses less digits than its factorization.

18992064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 18992064 is about 4357.9885268321. The cubic root of 18992064 is about 266.8030080572.

The spelling of 18992064 in words is "eighteen million, nine hundred ninety-two thousand, sixty-four".