3247725420 has 72 divisors (see below), whose sum is σ = 9860157216. Its totient is φ = 865293312.

The previous prime is 3247725401. The next prime is 3247725421. The reversal of 3247725420 is 245277423.

It is a happy number.

3247725420 is a `hidden beast` number, since 3 + 2 + 47 + 72 + 542 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (3247725421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212764 + ... + 227516.

It is an arithmetic number, because the mean of its divisors is an integer number (136946628).

Almost surely, 2^3247725420 is an apocalyptic number.

3247725420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3247725420 is an abundant number, since it is smaller than the sum of its proper divisors (6612431796).

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

3247725420 is a wasteful number, since it uses less digits than its factorization.

3247725420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15991 (or 15986 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 36.

The square root of 3247725420 is about 56988.8183769413. The cubic root of 3247725420 is about 1480.9023928227.

The spelling of 3247725420 in words is "three billion, two hundred forty-seven million, seven hundred twenty-five thousand, four hundred twenty".