780283776 has 64 divisors (see below), whose sum is σ = 2083248000. Its totient is φ = 258762240.

The previous prime is 780283769. The next prime is 780283783. The reversal of 780283776 is 677382087.

It is an interprime number because it is at equal distance from previous prime (780283769) and next prime (780283783).

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 71311 + ... + 81521.

It is an arithmetic number, because the mean of its divisors is an integer number (32550750).

Almost surely, 2^780283776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780283776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041624000).

780283776 is an abundant number, since it is smaller than the sum of its proper divisors (1302964224).

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

780283776 is a wasteful number, since it uses less digits than its factorization.

780283776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10427 (or 10415 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 48.

The square root of 780283776 is about 27933.5600309019. The cubic root of 780283776 is about 920.6280273935.

The spelling of 780283776 in words is "seven hundred eighty million, two hundred eighty-three thousand, seven hundred seventy-six".