780099360 has 48 divisors (see below), whose sum is σ = 2457314496. Its totient is φ = 208026368.

The previous prime is 780099337. The next prime is 780099401. The reversal of 780099360 is 63990087.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×780099360² = 1217110022944819200, which contains 22 as substring.

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, 812124 + ... + 813083.

It is an arithmetic number, because the mean of its divisors is an integer number (51194052).

Almost surely, 2^780099360 is an apocalyptic number.

It is an amenable number.

780099360 is an abundant number, since it is smaller than the sum of its proper divisors (1677215136).

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

780099360 is a wasteful number, since it uses less digits than its factorization.

780099360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625225 (or 1625217 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 780099360 is about 27930.2588602397. The cubic root of 780099360 is about 920.5554931349. Note that the first 3 decimals are identical.

The spelling of 780099360 in words is "seven hundred eighty million, ninety-nine thousand, three hundred sixty".