190691420 has 12 divisors (see below), whose sum is σ = 400452024. Its totient is φ = 76276560.

The previous prime is 190691399. The next prime is 190691453. The reversal of 190691420 is 24196091.

It is a congruent number.

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, 4767266 + ... + 4767305.

It is an arithmetic number, because the mean of its divisors is an integer number (33371002).

Almost surely, 2^190691420 is an apocalyptic number.

190691420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190691420 is an abundant number, since it is smaller than the sum of its proper divisors (209760604).

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

190691420 is a wasteful number, since it uses less digits than its factorization.

190691420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9534580 (or 9534578 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 190691420 is about 13809.1064156954. The cubic root of 190691420 is about 575.5862150026.

The spelling of 190691420 in words is "one hundred ninety million, six hundred ninety-one thousand, four hundred twenty".