189206040 has 32 divisors (see below), whose sum is σ = 567618480. Its totient is φ = 50454912.

The previous prime is 189206033. The next prime is 189206041. The reversal of 189206040 is 40602981.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 189205989 and 189206007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189206041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788239 + ... + 788478.

Almost surely, 2^189206040 is an apocalyptic number.

189206040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189206040 is an abundant number, since it is smaller than the sum of its proper divisors (378412440).

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

189206040 is a wasteful number, since it uses less digits than its factorization.

189206040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576731 (or 1576727 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 189206040 is about 13755.2186460267. The cubic root of 189206040 is about 574.0878189600.

The spelling of 189206040 in words is "one hundred eighty-nine million, two hundred six thousand, forty".