189426540 has 24 divisors (see below), whose sum is σ = 530394480. Its totient is φ = 50513728.

The previous prime is 189426511. The next prime is 189426577. The reversal of 189426540 is 45624981.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578495 + ... + 1578614.

It is an arithmetic number, because the mean of its divisors is an integer number (22099770).

Almost surely, 2^189426540 is an apocalyptic number.

189426540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189426540 is an abundant number, since it is smaller than the sum of its proper divisors (340967940).

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

189426540 is a wasteful number, since it uses less digits than its factorization.

189426540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157121 (or 3157119 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 189426540 is about 13763.2314519520. The cubic root of 189426540 is about 574.3107456373.

The spelling of 189426540 in words is "one hundred eighty-nine million, four hundred twenty-six thousand, five hundred forty".