190780 has 12 divisors (see below), whose sum is σ = 400680. Its totient is φ = 76304.

The previous prime is 190769. The next prime is 190783. The reversal of 190780 is 87091.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4750 + ... + 4789.

It is an arithmetic number, because the mean of its divisors is an integer number (33390).

2¹⁹⁰⁷⁸⁰ is an apocalyptic number.

190780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190780 is an abundant number, since it is smaller than the sum of its proper divisors (209900).

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

190780 is a wasteful number, since it uses less digits than its factorization.

190780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9548 (or 9546 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 190780 is about 436.7836993295. The cubic root of 190780 is about 57.5675324997.

The spelling of 190780 in words is "one hundred ninety thousand, seven hundred eighty".