845245780 has 48 divisors (see below), whose sum is σ = 1978361280. Its totient is φ = 301459968.

The previous prime is 845245759. The next prime is 845245781. The reversal of 845245780 is 87542548.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845245781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58962 + ... + 71881.

It is an arithmetic number, because the mean of its divisors is an integer number (41215860).

Almost surely, 2^845245780 is an apocalyptic number.

It is an amenable number.

845245780 is an abundant number, since it is smaller than the sum of its proper divisors (1133115500).

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

845245780 is a wasteful number, since it uses less digits than its factorization.

845245780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130888 (or 130886 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 43.

The square root of 845245780 is about 29073.1109446512. The cubic root of 845245780 is about 945.4988473223.

The spelling of 845245780 in words is "eight hundred forty-five million, two hundred forty-five thousand, seven hundred eighty".