305894865144 has 64 divisors (see below), whose sum is σ = 837934035840. Its totient is φ = 92287045760.

The previous prime is 305894865127. The next prime is 305894865169. The reversal of 305894865144 is 441568498503.

It is a super-2 number, since 2×305894865144² (a number of 24 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 15 ways as a sum of consecutive naturals, for example, 2492259 + ... + 2612114.

It is an arithmetic number, because the mean of its divisors is an integer number (13092719310).

Almost surely, 2^305894865144 is an apocalyptic number.

It is an amenable number.

305894865144 is an abundant number, since it is smaller than the sum of its proper divisors (532039170696).

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

305894865144 is a wasteful number, since it uses less digits than its factorization.

305894865144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104620 (or 5104616 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 57.

The spelling of 305894865144 in words is "three hundred five billion, eight hundred ninety-four million, eight hundred sixty-five thousand, one hundred forty-four".