780030 has 56 divisors (see below), whose sum is σ = 2124792. Its totient is φ = 206064.

The previous prime is 780029. The next prime is 780037. The reversal of 780030 is 30087.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 779985 and 780012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780037) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7237 + ... + 7343.

2⁷⁸⁰⁰³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1062396).

780030 is an abundant number, since it is smaller than the sum of its proper divisors (1344762).

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

780030 is a wasteful number, since it uses less digits than its factorization.

780030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 780030 is about 883.1930706250. The cubic root of 780030 is about 92.0528209593.

The spelling of 780030 in words is "seven hundred eighty thousand, thirty".