190123020 has 72 divisors (see below), whose sum is σ = 592313904. Its totient is φ = 49327488.

The previous prime is 190123009. The next prime is 190123033. The reversal of 190123020 is 20321091.

It is a happy number.

It is a super-2 number, since 2×190123020² = 72293525467840800, which contains 22 as substring.

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 = 190122984 and 190123002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7614 + ... + 20933.

It is an arithmetic number, because the mean of its divisors is an integer number (8226582).

Almost surely, 2^190123020 is an apocalyptic number.

190123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190123020 is an abundant number, since it is smaller than the sum of its proper divisors (402190884).

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

190123020 is a wasteful number, since it uses less digits than its factorization.

190123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28599 (or 28594 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 190123020 is about 13788.5104344160. The cubic root of 190123020 is about 575.0137564447.

The spelling of 190123020 in words is "one hundred ninety million, one hundred twenty-three thousand, twenty".