7421530734828 has 72 divisors (see below), whose sum is σ = 21477658194720. Its totient is φ = 2116710708480.

The previous prime is 7421530734823. The next prime is 7421530734853. The reversal of 7421530734828 is 8284370351247.

It is a happy number.

7421530734828 is a `hidden beast` number, since 7 + 4 + 2 + 153 + 0 + 7 + 3 + 482 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (7421530734823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25735803 + ... + 26022578.

It is an arithmetic number, because the mean of its divisors is an integer number (298300808260).

Almost surely, 2^{7421530734828} is an apocalyptic number.

It is an amenable number.

7421530734828 is an abundant number, since it is smaller than the sum of its proper divisors (14056127459892).

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

7421530734828 is a wasteful number, since it uses less digits than its factorization.

7421530734828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51758967 (or 51758962 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 7421530734828 in words is "seven trillion, four hundred twenty-one billion, five hundred thirty million, seven hundred thirty-four thousand, eight hundred twenty-eight".