190775280 has 80 divisors (see below), whose sum is σ = 599559840. Its totient is φ = 50171904.

The previous prime is 190775269. The next prime is 190775281. The reversal of 190775280 is 82577091.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190775281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12076 + ... + 22964.

It is an arithmetic number, because the mean of its divisors is an integer number (7494498).

Almost surely, 2^190775280 is an apocalyptic number.

190775280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190775280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299779920).

190775280 is an abundant number, since it is smaller than the sum of its proper divisors (408784560).

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

190775280 is a wasteful number, since it uses less digits than its factorization.

190775280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10978 (or 10972 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 190775280 is about 13812.1424840609. The cubic root of 190775280 is about 575.6705774524.

The spelling of 190775280 in words is "one hundred ninety million, seven hundred seventy-five thousand, two hundred eighty".