190123730 has 8 divisors (see below), whose sum is σ = 342222732. Its totient is φ = 76049488.

The previous prime is 190123693. The next prime is 190123741. The reversal of 190123730 is 37321091.

190123730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 182763361 + 7360369 = 13519^2 + 2713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×190123730² = 72294065418225800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 190123730.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9506177 + ... + 9506196.

Almost surely, 2^190123730 is an apocalyptic number.

190123730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190123730 is a deficient number, since it is larger than the sum of its proper divisors (152099002).

190123730 is a wasteful number, since it uses less digits than its factorization.

190123730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19012380.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 190123730 is about 13788.5361804653. The cubic root of 190123730 is about 575.0144722255.

The spelling of 190123730 in words is "one hundred ninety million, one hundred twenty-three thousand, seven hundred thirty".