8742520280 has 32 divisors (see below), whose sum is σ = 21183800400. Its totient is φ = 3228007296.

The previous prime is 8742520261. The next prime is 8742520313. The reversal of 8742520280 is 820252478.

It is a happy number.

It is a super-2 number, since 2×8742520280² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8405750 + ... + 8406789.

Almost surely, 2^8742520280 is an apocalyptic number.

It is an amenable number.

8742520280 is an abundant number, since it is smaller than the sum of its proper divisors (12441280120).

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

8742520280 is a wasteful number, since it uses less digits than its factorization.

8742520280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16812563 (or 16812559 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 8742520280 is about 93501.4453364225. The cubic root of 8742520280 is about 2060.0553194683.

The spelling of 8742520280 in words is "eight billion, seven hundred forty-two million, five hundred twenty thousand, two hundred eighty".