190003728 has 40 divisors (see below), whose sum is σ = 500110848. Its totient is φ = 62138752.

The previous prime is 190003711. The next prime is 190003729. The reversal of 190003728 is 827300091.

It is a happy number.

It is a super-2 number, since 2×190003728² = 72202833307795968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 190003695 and 190003704.

It is not an unprimeable number, because it can be changed into a prime (190003729) 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, 34800 + ... + 39887.

Almost surely, 2^190003728 is an apocalyptic number.

It is an amenable number.

190003728 is an abundant number, since it is smaller than the sum of its proper divisors (310107120).

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

190003728 is a wasteful number, since it uses less digits than its factorization.

190003728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74751 (or 74745 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 190003728 is about 13784.1839801999. The cubic root of 190003728 is about 574.8934678503.

The spelling of 190003728 in words is "one hundred ninety million, three thousand, seven hundred twenty-eight".