18477004 has 48 divisors (see below), whose sum is σ = 41545728. Its totient is φ = 6988608.

The previous prime is 18476993. The next prime is 18477007. The reversal of 18477004 is 40077481.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18477007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7269 + ... + 9475.

It is an arithmetic number, because the mean of its divisors is an integer number (865536).

Almost surely, 2^18477004 is an apocalyptic number.

18477004 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 18477004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20772864).

18477004 is an abundant number, since it is smaller than the sum of its proper divisors (23068724).

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

18477004 is a wasteful number, since it uses less digits than its factorization.

18477004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254 (or 2252 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 18477004 is about 4298.4885715795. The cubic root of 18477004 is about 264.3689935053.

The spelling of 18477004 in words is "eighteen million, four hundred seventy-seven thousand, four".