776223140 has 96 divisors (see below), whose sum is σ = 2062900224. Its totient is φ = 238296960.

The previous prime is 776223139. The next prime is 776223187. The reversal of 776223140 is 41322677.

It is a junction number, because it is equal to n+sod(n) for n = 776223097 and 776223106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99419 + ... + 106941.

It is an arithmetic number, because the mean of its divisors is an integer number (21488544).

Almost surely, 2^776223140 is an apocalyptic number.

776223140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 776223140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031450112).

776223140 is an abundant number, since it is smaller than the sum of its proper divisors (1286677084).

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

776223140 is a wasteful number, since it uses less digits than its factorization.

776223140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7617 (or 7615 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 776223140 is about 27860.7813960772. The cubic root of 776223140 is about 919.0282508899.

The spelling of 776223140 in words is "seven hundred seventy-six million, two hundred twenty-three thousand, one hundred forty".