1372720572 has 36 divisors (see below), whose sum is σ = 3563717976. Its totient is φ = 445206240.

The previous prime is 1372720571. The next prime is 1372720651. The reversal of 1372720572 is 2750272731.

1372720572 is a `hidden beast` number, since 13 + 7 + 2 + 72 + 0 + 572 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1372720572³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372720571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513954 + ... + 516617.

It is an arithmetic number, because the mean of its divisors is an integer number (98992166).

Almost surely, 2^1372720572 is an apocalyptic number.

1372720572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1372720572 is an abundant number, since it is smaller than the sum of its proper divisors (2190997404).

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

1372720572 is a wasteful number, since it uses less digits than its factorization.

1372720572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030618 (or 1030613 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 1372720572 is about 37050.2438858370. The cubic root of 1372720572 is about 1111.3752323917.

The spelling of 1372720572 in words is "one billion, three hundred seventy-two million, seven hundred twenty thousand, five hundred seventy-two".