780090 has 16 divisors (see below), whose sum is σ = 1872288. Its totient is φ = 208016.

The previous prime is 780061. The next prime is 780119. The reversal of 780090 is 90087.

It is an interprime number because it is at equal distance from previous prime (780061) and next prime (780119).

It is a self number, because there is not a number n which added to its sum of digits gives 780090.

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 7 ways as a sum of consecutive naturals, for example, 12972 + ... + 13031.

It is an arithmetic number, because the mean of its divisors is an integer number (117018).

2⁷⁸⁰⁰⁹⁰ is an apocalyptic number.

780090 is an abundant number, since it is smaller than the sum of its proper divisors (1092198).

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

780090 is a wasteful number, since it uses less digits than its factorization.

780090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26013.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 780090 is about 883.2270376296. The cubic root of 780090 is about 92.0551811367.

The spelling of 780090 in words is "seven hundred eighty thousand, ninety".