193280385 has 16 divisors (see below), whose sum is σ = 322694784. Its totient is φ = 98600832.

The previous prime is 193280383. The next prime is 193280393. The reversal of 193280385 is 583082391.

It is not a de Polignac number, because 193280385 - 2¹ = 193280383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (193280383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279772 + ... + 280461.

It is an arithmetic number, because the mean of its divisors is an integer number (20168424).

Almost surely, 2^193280385 is an apocalyptic number.

193280385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

193280385 is a deficient number, since it is larger than the sum of its proper divisors (129414399).

193280385 is a wasteful number, since it uses less digits than its factorization.

193280385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560264.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 193280385 is about 13902.5316039921. The cubic root of 193280385 is about 578.1793732546.

The spelling of 193280385 in words is "one hundred ninety-three million, two hundred eighty thousand, three hundred eighty-five".