1422621520 has 20 divisors (see below), whose sum is σ = 3307595220. Its totient is φ = 569048576.

The previous prime is 1422621517. The next prime is 1422621559. The reversal of 1422621520 is 251262241.

It can be written as a sum of positive squares in 2 ways, for example, as 850072336 + 572549184 = 29156^2 + 23928^2 .

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

It is a super-2 number, since 2×1422621520² = 4047703978334220800, which contains 22 as substring.

It is a congruent number.

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, 8891305 + ... + 8891464.

It is an arithmetic number, because the mean of its divisors is an integer number (165379761).

Almost surely, 2^1422621520 is an apocalyptic number.

1422621520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422621520 is an abundant number, since it is smaller than the sum of its proper divisors (1884973700).

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

1422621520 is a wasteful number, since it uses less digits than its factorization.

1422621520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17782782 (or 17782776 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1422621520 is about 37717.6552823741. The cubic root of 1422621520 is about 1124.6821212178.

Adding to 1422621520 its reverse (251262241), we get a palindrome (1673883761).

The spelling of 1422621520 in words is "one billion, four hundred twenty-two million, six hundred twenty-one thousand, five hundred twenty".