395078780 has 24 divisors (see below), whose sum is σ = 873332880. Its totient is φ = 149713920.

The previous prime is 395078777. The next prime is 395078791. The reversal of 395078780 is 87870593.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 519461 + ... + 520220.

It is an arithmetic number, because the mean of its divisors is an integer number (36388870).

Almost surely, 2^395078780 is an apocalyptic number.

It is an amenable number.

395078780 is an abundant number, since it is smaller than the sum of its proper divisors (478254100).

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

395078780 is a wasteful number, since it uses less digits than its factorization.

395078780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039709 (or 1039707 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 395078780 is about 19876.5887415321. The cubic root of 395078780 is about 733.7721675559.

The spelling of 395078780 in words is "three hundred ninety-five million, seventy-eight thousand, seven hundred eighty".