495421920 has 480 divisors, whose sum is σ = 2060771328. Its totient is φ = 109734912.

The previous prime is 495421891. The next prime is 495421921. The reversal of 495421920 is 29124594.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495421921) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3900897 + ... + 3901023.

Almost surely, 2^495421920 is an apocalyptic number.

495421920 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 495421920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1030385664).

495421920 is an abundant number, since it is smaller than the sum of its proper divisors (1565349408).

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

495421920 is a wasteful number, since it uses less digits than its factorization.

495421920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 495421920 is about 22258.0753884966. The cubic root of 495421920 is about 791.2706784650.

The spelling of 495421920 in words is "four hundred ninety-five million, four hundred twenty-one thousand, nine hundred twenty".