190745400 has 96 divisors (see below), whose sum is σ = 594091440. Its totient is φ = 50626560.

The previous prime is 190745381. The next prime is 190745413. The reversal of 190745400 is 4547091.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153582 + ... + 154818.

Almost surely, 2^190745400 is an apocalyptic number.

190745400 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 190745400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297045720).

190745400 is an abundant number, since it is smaller than the sum of its proper divisors (403346040).

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

190745400 is a wasteful number, since it uses less digits than its factorization.

190745400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513 (or 1504 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 190745400 is about 13811.0607847479. The cubic root of 190745400 is about 575.6405212610.

The spelling of 190745400 in words is "one hundred ninety million, seven hundred forty-five thousand, four hundred".