190935540 has 72 divisors (see below), whose sum is σ = 594845160. Its totient is φ = 49538304.

The previous prime is 190935539. The next prime is 190935553. The reversal of 190935540 is 45539091.

190935540 is a `hidden beast` number, since 19 + 0 + 93 + 554 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 82192356 + 108743184 = 9066^2 + 10428^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 190935495 and 190935504.

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, 7675 + ... + 20994.

Almost surely, 2^190935540 is an apocalyptic number.

190935540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190935540 is an abundant number, since it is smaller than the sum of its proper divisors (403909620).

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

190935540 is a wasteful number, since it uses less digits than its factorization.

190935540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28721 (or 28716 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 190935540 is about 13817.9426833375. The cubic root of 190935540 is about 575.8317289137.

The spelling of 190935540 in words is "one hundred ninety million, nine hundred thirty-five thousand, five hundred forty".