1372646420 has 36 divisors (see below), whose sum is σ = 2926414260. Its totient is φ = 540828288.

The previous prime is 1372646389. The next prime is 1372646423. The reversal of 1372646420 is 246462731.

It can be written as a sum of positive squares in 2 ways, for example, as 675792016 + 696854404 = 25996^2 + 26398^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372646423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82136 + ... + 97424.

It is an arithmetic number, because the mean of its divisors is an integer number (81289285).

Almost surely, 2^1372646420 is an apocalyptic number.

1372646420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1372646420 is an abundant number, since it is smaller than the sum of its proper divisors (1553767840).

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

1372646420 is a wasteful number, since it uses less digits than its factorization.

1372646420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15432 (or 15363 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 1372646420 is about 37049.2431771555. The cubic root of 1372646420 is about 1111.3552205064.

The spelling of 1372646420 in words is "one billion, three hundred seventy-two million, six hundred forty-six thousand, four hundred twenty".