7473206440 has 64 divisors (see below), whose sum is σ = 19308044160. Its totient is φ = 2550078720.

The previous prime is 7473206423. The next prime is 7473206449. The reversal of 7473206440 is 446023747.

It is a self number, because there is not a number n which added to its sum of digits gives 7473206440.

It is not an unprimeable number, because it can be changed into a prime (7473206449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4167 + ... + 122326.

It is an arithmetic number, because the mean of its divisors is an integer number (301688190).

Almost surely, 2^7473206440 is an apocalyptic number.

7473206440 is a gapful number since it is divisible by the number (70) 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 7473206440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9654022080).

7473206440 is an abundant number, since it is smaller than the sum of its proper divisors (11834837720).

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

7473206440 is a wasteful number, since it uses less digits than its factorization.

7473206440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126722 (or 126718 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 37.

The square root of 7473206440 is about 86447.7092813916. The cubic root of 7473206440 is about 1955.1000783840.

The spelling of 7473206440 in words is "seven billion, four hundred seventy-three million, two hundred six thousand, four hundred forty".