193290920 has 16 divisors (see below), whose sum is σ = 434904660. Its totient is φ = 77316352.

The previous prime is 193290869. The next prime is 193290941. The reversal of 193290920 is 29092391.

It can be written as a sum of positive squares in 2 ways, for example, as 181333156 + 11957764 = 13466^2 + 3458^2 .

It is a super-2 number, since 2×193290920² = 74722759508892800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2416097 + ... + 2416176.

Almost surely, 2^193290920 is an apocalyptic number.

193290920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193290920 is an abundant number, since it is smaller than the sum of its proper divisors (241613740).

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

193290920 is a wasteful number, since it uses less digits than its factorization.

193290920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832284 (or 4832280 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 193290920 is about 13902.9104866571. The cubic root of 193290920 is about 578.1898778712.

The spelling of 193290920 in words is "one hundred ninety-three million, two hundred ninety thousand, nine hundred twenty".