189287742 has 32 divisors (see below), whose sum is σ = 433094400. Its totient is φ = 54027648.

The previous prime is 189287737. The next prime is 189287743. The reversal of 189287742 is 247782981.

189287742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 189287691 and 189287700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189287743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59734 + ... + 62822.

It is an arithmetic number, because the mean of its divisors is an integer number (13534200).

Almost surely, 2^189287742 is an apocalyptic number.

189287742 is an abundant number, since it is smaller than the sum of its proper divisors (243806658).

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

189287742 is a wasteful number, since it uses less digits than its factorization.

189287742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560.

The product of its digits is 451584, while the sum is 48.

The square root of 189287742 is about 13758.1881801348. The cubic root of 189287742 is about 574.1704403063.

The spelling of 189287742 in words is "one hundred eighty-nine million, two hundred eighty-seven thousand, seven hundred forty-two".