7474747440 has 80 divisors (see below), whose sum is σ = 24391296000. Its totient is φ = 1888356096.

The previous prime is 7474747429. The next prime is 7474747451. The reversal of 7474747440 is 447474747.

It is an interprime number because it is at equal distance from previous prime (7474747429) and next prime (7474747451).

It is a tau number, because it is divible by the number of its divisors (80).

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 7474747440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815040 + ... + 824159.

It is an arithmetic number, because the mean of its divisors is an integer number (304891200).

Almost surely, 2^7474747440 is an apocalyptic number.

It is an amenable number.

7474747440 is an abundant number, since it is smaller than the sum of its proper divisors (16916548560).

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

7474747440 is a wasteful number, since it uses less digits than its factorization.

7474747440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639234 (or 1639228 counting only the distinct ones).

The product of its (nonzero) digits is 2458624, while the sum is 48.

The square root of 7474747440 is about 86456.6217244232. The cubic root of 7474747440 is about 1955.2344518592.

The spelling of 7474747440 in words is "seven billion, four hundred seventy-four million, seven hundred forty-seven thousand, four hundred forty".