1522449220 has 24 divisors (see below), whose sum is σ = 3218607000. Its totient is φ = 604891392.

The previous prime is 1522449197. The next prime is 1522449251. The reversal of 1522449220 is 229442251.

It can be written as a sum of positive squares in 4 ways, for example, as 3944196 + 1518505024 = 1986^2 + 38968^2 .

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, 252465 + ... + 258424.

It is an arithmetic number, because the mean of its divisors is an integer number (134108625).

Almost surely, 2^1522449220 is an apocalyptic number.

1522449220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1522449220 is an abundant number, since it is smaller than the sum of its proper divisors (1696157780).

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

1522449220 is a wasteful number, since it uses less digits than its factorization.

1522449220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511047 (or 511045 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1522449220 is about 39018.5753199678. The cubic root of 1522449220 is about 1150.3966420080.

The spelling of 1522449220 in words is "one billion, five hundred twenty-two million, four hundred forty-nine thousand, two hundred twenty".