20486480 has 40 divisors (see below), whose sum is σ = 54436992. Its totient is φ = 7023744.

The previous prime is 20486449. The next prime is 20486489. The reversal of 20486480 is 8468402.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20486489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17732 + ... + 18851.

Almost surely, 2^20486480 is an apocalyptic number.

20486480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20486480 is an abundant number, since it is smaller than the sum of its proper divisors (33950512).

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

20486480 is a wasteful number, since it uses less digits than its factorization.

20486480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36603 (or 36597 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 20486480 is about 4526.1992885864. The cubic root of 20486480 is about 273.6250042695.

The spelling of 20486480 in words is "twenty million, four hundred eighty-six thousand, four hundred eighty".