190042644 has 24 divisors (see below), whose sum is σ = 483745248. Its totient is φ = 57588640.

The previous prime is 190042639. The next prime is 190042669. The reversal of 190042644 is 446240091.

It is a super-2 number, since 2×190042644² = 72232413077021472, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 719727 + ... + 719990.

It is an arithmetic number, because the mean of its divisors is an integer number (20156052).

Almost surely, 2^190042644 is an apocalyptic number.

It is an amenable number.

190042644 is an abundant number, since it is smaller than the sum of its proper divisors (293702604).

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

190042644 is a wasteful number, since it uses less digits than its factorization.

190042644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439735 (or 1439733 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 190042644 is about 13785.5955257653. The cubic root of 190042644 is about 574.9327144959.

It can be divided in two parts, 1900 and 42644, that added together give a palindrome (44544).

The spelling of 190042644 in words is "one hundred ninety million, forty-two thousand, six hundred forty-four".