1422457220 has 24 divisors (see below), whose sum is σ = 3002807808. Its totient is φ = 566002400.

The previous prime is 1422457219. The next prime is 1422457247. The reversal of 1422457220 is 227542241.

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, 182366 + ... + 190005.

It is an arithmetic number, because the mean of its divisors is an integer number (125116992).

Almost surely, 2^1422457220 is an apocalyptic number.

1422457220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422457220 is an abundant number, since it is smaller than the sum of its proper divisors (1580350588).

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

1422457220 is a wasteful number, since it uses less digits than its factorization.

1422457220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372571 (or 372569 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 1422457220 is about 37715.4771943827. The cubic root of 1422457220 is about 1124.6388226585.

Adding to 1422457220 its reverse (227542241), we get a palindrome (1649999461).

The spelling of 1422457220 in words is "one billion, four hundred twenty-two million, four hundred fifty-seven thousand, two hundred twenty".