190356820 has 96 divisors (see below), whose sum is σ = 452390400. Its totient is φ = 66852864.

The previous prime is 190356811. The next prime is 190356827. The reversal of 190356820 is 28653091.

190356820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190356827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 510154 + ... + 510526.

It is an arithmetic number, because the mean of its divisors is an integer number (4712400).

Almost surely, 2^190356820 is an apocalyptic number.

190356820 is a gapful number since it is divisible by the number (10) 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 190356820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226195200).

190356820 is an abundant number, since it is smaller than the sum of its proper divisors (262033580).

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

190356820 is a wasteful number, since it uses less digits than its factorization.

190356820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 190356820 is about 13796.9859027253. The cubic root of 190356820 is about 575.2493638009.

The spelling of 190356820 in words is "one hundred ninety million, three hundred fifty-six thousand, eight hundred twenty".