190621368 has 144 divisors (see below), whose sum is σ = 609813360. Its totient is φ = 53625600.

The previous prime is 190621363. The next prime is 190621427. The reversal of 190621368 is 863126091.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190621363) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 250108 + ... + 250868.

It is an arithmetic number, because the mean of its divisors is an integer number (4234815).

Almost surely, 2^190621368 is an apocalyptic number.

190621368 is a gapful number since it is divisible by the number (18) 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 190621368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304906680).

190621368 is an abundant number, since it is smaller than the sum of its proper divisors (419191992).

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

190621368 is a wasteful number, since it uses less digits than its factorization.

190621368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 190621368 is about 13806.5697405257. The cubic root of 190621368 is about 575.5157243220.

The spelling of 190621368 in words is "one hundred ninety million, six hundred twenty-one thousand, three hundred sixty-eight".