780982740 has 72 divisors (see below), whose sum is σ = 2380324128. Its totient is φ = 207264960.

The previous prime is 780982739. The next prime is 780982751. The reversal of 780982740 is 47289087.

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 23 ways as a sum of consecutive naturals, for example, 27699 + ... + 48261.

Almost surely, 2^780982740 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 780982740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190162064).

780982740 is an abundant number, since it is smaller than the sum of its proper divisors (1599341388).

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

780982740 is a wasteful number, since it uses less digits than its factorization.

780982740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20789 (or 20784 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 780982740 is about 27946.0684175789. The cubic root of 780982740 is about 920.9028392944.

The spelling of 780982740 in words is "seven hundred eighty million, nine hundred eighty-two thousand, seven hundred forty".