20604480 has 168 divisors, whose sum is σ = 71396352. Its totient is φ = 5031936.

The previous prime is 20604457. The next prime is 20604499. The reversal of 20604480 is 8440602.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20604480.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162177 + ... + 162303.

Almost surely, 2^20604480 is an apocalyptic number.

20604480 is a gapful number since it is divisible by the number (20) 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 20604480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35698176).

20604480 is an abundant number, since it is smaller than the sum of its proper divisors (50791872).

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

20604480 is a wasteful number, since it uses less digits than its factorization.

20604480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20604480 is about 4539.2157913014. The cubic root of 20604480 is about 274.1493493782.

The spelling of 20604480 in words is "twenty million, six hundred four thousand, four hundred eighty".