189743400 has 432 divisors, whose sum is σ = 816510240. Its totient is φ = 38361600.

The previous prime is 189743387. The next prime is 189743431. The reversal of 189743400 is 4347981.

It is a happy number.

189743400 is a `hidden beast` number, since 189 + 74 + 3 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 5128182 + ... + 5128218.

It is an arithmetic number, because the mean of its divisors is an integer number (1890070).

Almost surely, 2^189743400 is an apocalyptic number.

189743400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189743400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408255120).

189743400 is an abundant number, since it is smaller than the sum of its proper divisors (626766840).

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

189743400 is a wasteful number, since it uses less digits than its factorization.

189743400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 189743400 is about 13774.7377470499. The cubic root of 189743400 is about 574.6307900746.

The spelling of 189743400 in words is "one hundred eighty-nine million, seven hundred forty-three thousand, four hundred".