447515420 has 24 divisors (see below), whose sum is σ = 1025217648. Its totient is φ = 162732800.

The previous prime is 447515401. The next prime is 447515423. The reversal of 447515420 is 24515744.

It is a super-2 number, since 2×447515420² = 400540102275552800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447515423) 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, 1016861 + ... + 1017300.

It is an arithmetic number, because the mean of its divisors is an integer number (42717402).

Almost surely, 2^447515420 is an apocalyptic number.

It is an amenable number.

447515420 is an abundant number, since it is smaller than the sum of its proper divisors (577702228).

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

447515420 is a wasteful number, since it uses less digits than its factorization.

447515420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034181 (or 2034179 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 447515420 is about 21154.5602648696. The cubic root of 447515420 is about 764.8964901886.

The spelling of 447515420 in words is "four hundred forty-seven million, five hundred fifteen thousand, four hundred twenty".