1321477620 has 48 divisors (see below), whose sum is σ = 3769960320. Its totient is φ = 345744256.

The previous prime is 1321477603. The next prime is 1321477667. The reversal of 1321477620 is 267741231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204600 + ... + 210959.

It is an arithmetic number, because the mean of its divisors is an integer number (78540840).

Almost surely, 2^1321477620 is an apocalyptic number.

1321477620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321477620 is an abundant number, since it is smaller than the sum of its proper divisors (2448482700).

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

1321477620 is a wasteful number, since it uses less digits than its factorization.

1321477620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415624 (or 415622 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 1321477620 is about 36352.1336375184. The cubic root of 1321477620 is about 1097.3704740051.

The spelling of 1321477620 in words is "one billion, three hundred twenty-one million, four hundred seventy-seven thousand, six hundred twenty".