7420752440 has 64 divisors (see below), whose sum is σ = 16994784960. Its totient is φ = 2915619840.

The previous prime is 7420752431. The next prime is 7420752481. The reversal of 7420752440 is 442570247.

It is a self number, because there is not a number n which added to its sum of digits gives 7420752440.

It is a congruent number.

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, 781964 + ... + 791396.

It is an arithmetic number, because the mean of its divisors is an integer number (265543515).

Almost surely, 2^7420752440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7420752440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8497392480).

7420752440 is an abundant number, since it is smaller than the sum of its proper divisors (9574032520).

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

7420752440 is a wasteful number, since it uses less digits than its factorization.

7420752440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9792 (or 9788 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 7420752440 is about 86143.7893292372. The cubic root of 7420752440 is about 1950.5150898756.

The spelling of 7420752440 in words is "seven billion, four hundred twenty million, seven hundred fifty-two thousand, four hundred forty".