73528783920 has 120 divisors (see below), whose sum is σ = 247051102896. Its totient is φ = 19598390784.

The previous prime is 73528783919. The next prime is 73528783921. The reversal of 73528783920 is 2938782537.

It is an interprime number because it is at equal distance from previous prime (73528783919) and next prime (73528783921).

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (73528783921) 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, 1570287 + ... + 1616433.

Almost surely, 2^73528783920 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 73528783920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123525551448).

73528783920 is an abundant number, since it is smaller than the sum of its proper divisors (173522318976).

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

73528783920 is a wasteful number, since it uses less digits than its factorization.

73528783920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48379 (or 48370 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 73528783920 in words is "seventy-three billion, five hundred twenty-eight million, seven hundred eighty-three thousand, nine hundred twenty".