2721246372 has 72 divisors (see below), whose sum is σ = 7843615416. Its totient is φ = 788050944.

The previous prime is 2721246347. The next prime is 2721246391. The reversal of 2721246372 is 2736421272.

It is a happy number.

2721246372 is a `hidden beast` number, since 2 + 7 + 2 + 12 + 4 + 637 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 154405476 + 2566840896 = 12426^2 + 50664^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163063 + ... + 178974.

It is an arithmetic number, because the mean of its divisors is an integer number (108939103).

Almost surely, 2^2721246372 is an apocalyptic number.

It is an amenable number.

2721246372 is an abundant number, since it is smaller than the sum of its proper divisors (5122369044).

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

2721246372 is a wasteful number, since it uses less digits than its factorization.

2721246372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342077 (or 342072 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 2721246372 is about 52165.5669191853. The cubic root of 2721246372 is about 1396.1195898950.

The spelling of 2721246372 in words is "two billion, seven hundred twenty-one million, two hundred forty-six thousand, three hundred seventy-two".