776942460 has 144 divisors (see below), whose sum is σ = 2780424192. Its totient is φ = 171849600.

The previous prime is 776942417. The next prime is 776942473. The reversal of 776942460 is 64249677.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29115 + ... + 49005.

Almost surely, 2^776942460 is an apocalyptic number.

776942460 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 776942460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390212096).

776942460 is an abundant number, since it is smaller than the sum of its proper divisors (2003481732).

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

776942460 is a wasteful number, since it uses less digits than its factorization.

776942460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19944 (or 19939 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 776942460 is about 27873.6875924231. The cubic root of 776942460 is about 919.3120487087.

The spelling of 776942460 in words is "seven hundred seventy-six million, nine hundred forty-two thousand, four hundred sixty".