3126221748 has 72 divisors (see below), whose sum is σ = 8670910248. Its totient is φ = 943757568.

The previous prime is 3126221737. The next prime is 3126221767. The reversal of 3126221748 is 8471226213.

It is a happy number.

3126221748 is a `hidden beast` number, since 3 + 12 + 622 + 17 + 4 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 37307664 + 3088914084 = 6108^2 + 55578^2 .

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 a congruent number.

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, 38215 + ... + 87822.

It is an arithmetic number, because the mean of its divisors is an integer number (120429309).

Almost surely, 2^3126221748 is an apocalyptic number.

It is an amenable number.

3126221748 is an abundant number, since it is smaller than the sum of its proper divisors (5544688500).

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

3126221748 is a wasteful number, since it uses less digits than its factorization.

3126221748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126113 (or 126108 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 3126221748 is about 55912.6260159546. The cubic root of 3126221748 is about 1462.1993729661.

The spelling of 3126221748 in words is "three billion, one hundred twenty-six million, two hundred twenty-one thousand, seven hundred forty-eight".