190357920 has 144 divisors (see below), whose sum is σ = 654387552. Its totient is φ = 50388480.

The previous prime is 190357907. The next prime is 190357931. The reversal of 190357920 is 29753091.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×190357920² = 72472275413452800, which contains 22 as substring.

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

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, 234315 + ... + 235125.

It is an arithmetic number, because the mean of its divisors is an integer number (4544358).

Almost surely, 2^190357920 is an apocalyptic number.

190357920 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 190357920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327193776).

190357920 is an abundant number, since it is smaller than the sum of its proper divisors (464029632).

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

190357920 is a wasteful number, since it uses less digits than its factorization.

190357920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 190357920 is about 13797.0257664469. The cubic root of 190357920 is about 575.2504718482.

The spelling of 190357920 in words is "one hundred ninety million, three hundred fifty-seven thousand, nine hundred twenty".