190242780 has 96 divisors (see below), whose sum is σ = 655624704. Its totient is φ = 40137984.

The previous prime is 190242779. The next prime is 190242781. The reversal of 190242780 is 87242091.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (190242779) and next prime (190242781).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190242781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11962 + ... + 22881.

It is an arithmetic number, because the mean of its divisors is an integer number (6829424).

Almost surely, 2^190242780 is an apocalyptic number.

190242780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190242780 is an abundant number, since it is smaller than the sum of its proper divisors (465381924).

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

190242780 is a wasteful number, since it uses less digits than its factorization.

190242780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34875 (or 34873 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 190242780 is about 13792.8524968550. The cubic root of 190242780 is about 575.1344663466.

The spelling of 190242780 in words is "one hundred ninety million, two hundred forty-two thousand, seven hundred eighty".