485742640 has 20 divisors (see below), whose sum is σ = 1129351824. Its totient is φ = 194297024.

The previous prime is 485742637. The next prime is 485742659. The reversal of 485742640 is 46247584.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 485742593 and 485742602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3035812 + ... + 3035971.

Almost surely, 2^485742640 is an apocalyptic number.

485742640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

485742640 is an abundant number, since it is smaller than the sum of its proper divisors (643609184).

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

485742640 is a wasteful number, since it uses less digits than its factorization.

485742640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071796 (or 6071790 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 485742640 is about 22039.5698687611. The cubic root of 485742640 is about 786.0836130990.

The spelling of 485742640 in words is "four hundred eighty-five million, seven hundred forty-two thousand, six hundred forty".