1372720408 has 16 divisors (see below), whose sum is σ = 2685757680. Its totient is φ = 656518368.

The previous prime is 1372720337. The next prime is 1372720411. The reversal of 1372720408 is 8040272731.

It is a super-2 number, since 2×1372720408² = 3768722637079372928, 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, 3730035 + ... + 3730402.

It is an arithmetic number, because the mean of its divisors is an integer number (167859855).

Almost surely, 2^1372720408 is an apocalyptic number.

It is an amenable number.

1372720408 is a deficient number, since it is larger than the sum of its proper divisors (1313037272).

1372720408 is a wasteful number, since it uses less digits than its factorization.

1372720408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7460466 (or 7460462 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 1372720408 is about 37050.2416726261. The cubic root of 1372720408 is about 1111.3751881328.

The spelling of 1372720408 in words is "one billion, three hundred seventy-two million, seven hundred twenty thousand, four hundred eight".