454878920 has 64 divisors (see below), whose sum is σ = 1063411200. Its totient is φ = 174908160.

The previous prime is 454878871. The next prime is 454878923. The reversal of 454878920 is 29878454.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (454878923) 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, 313637 + ... + 315083.

It is an arithmetic number, because the mean of its divisors is an integer number (16615800).

Almost surely, 2^454878920 is an apocalyptic number.

454878920 is a gapful number since it is divisible by the number (40) 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 454878920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531705600).

454878920 is an abundant number, since it is smaller than the sum of its proper divisors (608532280).

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

454878920 is a wasteful number, since it uses less digits than its factorization.

454878920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 454878920 is about 21327.8906598848. The cubic root of 454878920 is about 769.0689370430.

The spelling of 454878920 in words is "four hundred fifty-four million, eight hundred seventy-eight thousand, nine hundred twenty".