3547748640 has 192 divisors, whose sum is σ = 11614700160. Its totient is φ = 909189120.

The previous prime is 3547748623. The next prime is 3547748671. The reversal of 3547748640 is 468477453.

It is a happy number.

It is a hoax number, since the sum of its digits (48) 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 (48).

It is a self number, because there is not a number n which added to its sum of digits gives 3547748640.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3911067 + ... + 3911973.

It is an arithmetic number, because the mean of its divisors is an integer number (60493230).

Almost surely, 2^3547748640 is an apocalyptic number.

3547748640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3547748640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5807350080).

3547748640 is an abundant number, since it is smaller than the sum of its proper divisors (8066951520).

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

3547748640 is a wasteful number, since it uses less digits than its factorization.

3547748640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 48.

The square root of 3547748640 is about 59562.9804492690. The cubic root of 3547748640 is about 1525.1677522173.

The spelling of 3547748640 in words is "three billion, five hundred forty-seven million, seven hundred forty-eight thousand, six hundred forty".