190540 has 24 divisors (see below), whose sum is σ = 457632. Its totient is φ = 65280.

The previous prime is 190537. The next prime is 190543. The reversal of 190540 is 45091.

It is an interprime number because it is at equal distance from previous prime (190537) and next prime (190543).

It is not an unprimeable number, because it can be changed into a prime (190543) 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, 541 + ... + 820.

It is an arithmetic number, because the mean of its divisors is an integer number (19068).

2¹⁹⁰⁵⁴⁰ is an apocalyptic number.

190540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190540 is an abundant number, since it is smaller than the sum of its proper divisors (267092).

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

190540 is a wasteful number, since it uses less digits than its factorization.

190540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 190540 is about 436.5088773439. The cubic root of 190540 is about 57.5433825095.

The spelling of 190540 in words is "one hundred ninety thousand, five hundred forty".