447721120 has 96 divisors (see below), whose sum is σ = 1318778496. Its totient is φ = 139545600.

The previous prime is 447721103. The next prime is 447721123. The reversal of 447721120 is 21127744.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (447721123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5851 + ... + 30490.

It is an arithmetic number, because the mean of its divisors is an integer number (13737276).

Almost surely, 2^447721120 is an apocalyptic number.

447721120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447721120 is an abundant number, since it is smaller than the sum of its proper divisors (871057376).

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

447721120 is a wasteful number, since it uses less digits than its factorization.

447721120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36374 (or 36366 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 447721120 is about 21159.4215421878. The cubic root of 447721120 is about 765.0136668639.

Adding to 447721120 its reverse (21127744), we get a palindrome (468848864).

The spelling of 447721120 in words is "four hundred forty-seven million, seven hundred twenty-one thousand, one hundred twenty".