192996640 has 24 divisors (see below), whose sum is σ = 455954940. Its totient is φ = 77198592.

The previous prime is 192996637. The next prime is 192996641. The reversal of 192996640 is 46699291.

It can be written as a sum of positive squares in 2 ways, for example, as 176252176 + 16744464 = 13276^2 + 4092^2 .

It is not an unprimeable number, because it can be changed into a prime (192996641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602955 + ... + 603274.

Almost surely, 2^192996640 is an apocalyptic number.

192996640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

192996640 is an abundant number, since it is smaller than the sum of its proper divisors (262958300).

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

192996640 is a wasteful number, since it uses less digits than its factorization.

192996640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206244 (or 1206236 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 192996640 is about 13892.3230598774. The cubic root of 192996640 is about 577.8963028812.

The spelling of 192996640 in words is "one hundred ninety-two million, nine hundred ninety-six thousand, six hundred forty".