18906048 has 140 divisors (see below), whose sum is σ = 64172592. Its totient is φ = 5391360.

The previous prime is 18906031. The next prime is 18906049. The reversal of 18906048 is 84060981.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18906049) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36028 + ... + 36548.

Almost surely, 2^18906048 is an apocalyptic number.

18906048 is a gapful number since it is divisible by the number (18) 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 18906048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32086296).

18906048 is an abundant number, since it is smaller than the sum of its proper divisors (45266544).

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

18906048 is an equidigital number, since it uses as much as digits as its factorization.

18906048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 18906048 is about 4348.1085543027. The cubic root of 18906048 is about 266.3996104207.

The spelling of 18906048 in words is "eighteen million, nine hundred six thousand, forty-eight".