190142856 has 64 divisors (see below), whose sum is σ = 536870400. Its totient is φ = 62337600.

The previous prime is 190142837. The next prime is 190142921. The reversal of 190142856 is 658241091.

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

It is a self number, because there is not a number n which added to its sum of digits gives 190142856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5961 + ... + 20391.

It is an arithmetic number, because the mean of its divisors is an integer number (8388600).

Almost surely, 2^190142856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190142856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268435200).

190142856 is an abundant number, since it is smaller than the sum of its proper divisors (346727544).

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

190142856 is a wasteful number, since it uses less digits than its factorization.

190142856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14507 (or 14497 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 190142856 is about 13789.2297101760. The cubic root of 190142856 is about 575.0337532801.

The spelling of 190142856 in words is "one hundred ninety million, one hundred forty-two thousand, eight hundred fifty-six".