192640 has 64 divisors (see below), whose sum is σ = 538560. Its totient is φ = 64512.

The previous prime is 192637. The next prime is 192667. The reversal of 192640 is 46291.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×192640² = 74220339200, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4459 + ... + 4501.

It is an arithmetic number, because the mean of its divisors is an integer number (8415).

2¹⁹²⁶⁴⁰ is an apocalyptic number.

192640 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 192640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269280).

192640 is an abundant number, since it is smaller than the sum of its proper divisors (345920).

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

192640 is an equidigital number, since it uses as much as digits as its factorization.

192640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 192640 is about 438.9077351790. The cubic root of 192640 is about 57.7540117026.

The spelling of 192640 in words is "one hundred ninety-two thousand, six hundred forty".