1455990220 has 12 divisors (see below), whose sum is σ = 3057579504. Its totient is φ = 582396080.

The previous prime is 1455990209. The next prime is 1455990227. The reversal of 1455990220 is 220995541.

It is a self number, because there is not a number n which added to its sum of digits gives 1455990220.

It is not an unprimeable number, because it can be changed into a prime (1455990227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36399736 + ... + 36399775.

It is an arithmetic number, because the mean of its divisors is an integer number (254798292).

Almost surely, 2^1455990220 is an apocalyptic number.

1455990220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1455990220 is an abundant number, since it is smaller than the sum of its proper divisors (1601589284).

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

1455990220 is a wasteful number, since it uses less digits than its factorization.

1455990220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72799520 (or 72799518 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1455990220 is about 38157.4399036413. The cubic root of 1455990220 is about 1133.4076838958.

The spelling of 1455990220 in words is "one billion, four hundred fifty-five million, nine hundred ninety thousand, two hundred twenty".