7479847280 has 20 divisors (see below), whose sum is σ = 17390645112. Its totient is φ = 2991938880.

The previous prime is 7479847261. The next prime is 7479847313. The reversal of 7479847280 is 827489747.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46748966 + ... + 46749125.

Almost surely, 2^7479847280 is an apocalyptic number.

It is an amenable number.

7479847280 is an abundant number, since it is smaller than the sum of its proper divisors (9910797832).

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

7479847280 is a wasteful number, since it uses less digits than its factorization.

7479847280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93498104 (or 93498098 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 56.

The square root of 7479847280 is about 86486.1103299252. The cubic root of 7479847280 is about 1955.6790205469.

The spelling of 7479847280 in words is "seven billion, four hundred seventy-nine million, eight hundred forty-seven thousand, two hundred eighty".