778211130 has 16 divisors (see below), whose sum is σ = 1867706784. Its totient is φ = 207522960.

The previous prime is 778211111. The next prime is 778211167. The reversal of 778211130 is 31112877.

It is a super-2 number, since 2×778211130² = 1211225125711753800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 25940371 = 778211130 / (7 + 7 + 8 + 2 + 1 + 1 + 1 + 3 + 0).

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, 12970156 + ... + 12970215.

It is an arithmetic number, because the mean of its divisors is an integer number (116731674).

Almost surely, 2^778211130 is an apocalyptic number.

778211130 is an abundant number, since it is smaller than the sum of its proper divisors (1089495654).

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

778211130 is a wasteful number, since it uses less digits than its factorization.

778211130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25940381.

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 778211130 is about 27896.4357938429. The cubic root of 778211130 is about 919.8121584048.

The spelling of 778211130 in words is "seven hundred seventy-eight million, two hundred eleven thousand, one hundred thirty".