18077460 has 96 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 4405248.

The previous prime is 18077447. The next prime is 18077461. The reversal of 18077460 is 6477081.

18077460 = 216² + 217² + ... + 400².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18077461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37501 + ... + 37979.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^18077460 is an apocalyptic number.

18077460 is a gapful number since it is divisible by the number (10) 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 18077460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27578880).

18077460 is an abundant number, since it is smaller than the sum of its proper divisors (37080300).

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

18077460 is a wasteful number, since it uses less digits than its factorization.

18077460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 18077460 is about 4251.7596357273. The cubic root of 18077460 is about 262.4495322479.

The spelling of 18077460 in words is "eighteen million, seventy-seven thousand, four hundred sixty".