455222640 has 40 divisors (see below), whose sum is σ = 1411190928. Its totient is φ = 121392640.

The previous prime is 455222591. The next prime is 455222689. The reversal of 455222640 is 46222554.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (455222591) and next prime (455222689).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 455222598 and 455222607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948141 + ... + 948620.

Almost surely, 2^455222640 is an apocalyptic number.

455222640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

455222640 is an abundant number, since it is smaller than the sum of its proper divisors (955968288).

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

455222640 is a wasteful number, since it uses less digits than its factorization.

455222640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896777 (or 1896771 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 455222640 is about 21335.9471315430. The cubic root of 455222640 is about 769.2625987034.

The spelling of 455222640 in words is "four hundred fifty-five million, two hundred twenty-two thousand, six hundred forty".