190693720 has 32 divisors (see below), whose sum is σ = 490356000. Its totient is φ = 65380608.

The previous prime is 190693697. The next prime is 190693721. The reversal of 190693720 is 27396091.

190693720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 190693720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190693721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340245 + ... + 340804.

It is an arithmetic number, because the mean of its divisors is an integer number (15323625).

Almost surely, 2^190693720 is an apocalyptic number.

190693720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190693720 is an abundant number, since it is smaller than the sum of its proper divisors (299662280).

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

190693720 is a wasteful number, since it uses less digits than its factorization.

190693720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681067 (or 681063 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 190693720 is about 13809.1896938235. The cubic root of 190693720 is about 575.5885291130.

The spelling of 190693720 in words is "one hundred ninety million, six hundred ninety-three thousand, seven hundred twenty".