18461044 has 36 divisors (see below), whose sum is σ = 37920960. Its totient is φ = 7840560.

The previous prime is 18461021. The next prime is 18461057. The reversal of 18461044 is 44016481.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 25317 + ... + 26035.

It is an arithmetic number, because the mean of its divisors is an integer number (1053360).

Almost surely, 2^18461044 is an apocalyptic number.

18461044 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 18461044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18960480).

18461044 is an abundant number, since it is smaller than the sum of its proper divisors (19459916).

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

18461044 is a wasteful number, since it uses less digits than its factorization.

18461044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18461044 is about 4296.6317040212. The cubic root of 18461044 is about 264.2928530125.

The spelling of 18461044 in words is "eighteen million, four hundred sixty-one thousand, forty-four".