7453729728 has 56 divisors (see below), whose sum is σ = 21912590160. Its totient is φ = 2484576000.

The previous prime is 7453729721. The next prime is 7453729741. The reversal of 7453729728 is 8279273547.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7453729721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2155023 + ... + 2158478.

Almost surely, 2^7453729728 is an apocalyptic number.

It is an amenable number.

7453729728 is an abundant number, since it is smaller than the sum of its proper divisors (14458860432).

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

7453729728 is a wasteful number, since it uses less digits than its factorization.

7453729728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313522 (or 4313506 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The square root of 7453729728 is about 86334.9855388880. The cubic root of 7453729728 is about 1953.4001365120.

The spelling of 7453729728 in words is "seven billion, four hundred fifty-three million, seven hundred twenty-nine thousand, seven hundred twenty-eight".