305052878140 has 24 divisors (see below), whose sum is σ = 655508977200. Its totient is φ = 119183449728.

The previous prime is 305052878129. The next prime is 305052878159. The reversal of 305052878140 is 41878250503.

It is a super-2 number, since 2×305052878140² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

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, 177355465 + ... + 177357184.

It is an arithmetic number, because the mean of its divisors is an integer number (27312874050).

Almost surely, 2^305052878140 is an apocalyptic number.

It is an amenable number.

305052878140 is an abundant number, since it is smaller than the sum of its proper divisors (350456099060).

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

305052878140 is a wasteful number, since it uses less digits than its factorization.

305052878140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354712701 (or 354712699 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 305052878140 in words is "three hundred five billion, fifty-two million, eight hundred seventy-eight thousand, one hundred forty".