102804393 has 4 divisors (see below), whose sum is σ = 137072528. Its totient is φ = 68536260.

The previous prime is 102804371. The next prime is 102804419. The reversal of 102804393 is 393408201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 393408201 = 3 ⋅131136067.

It is not a de Polignac number, because 102804393 - 2¹² = 102800297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102804393.

It is not an unprimeable number, because it can be changed into a prime (102802393) 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, 17134063 + ... + 17134068.

It is an arithmetic number, because the mean of its divisors is an integer number (34268132).

Almost surely, 2^102804393 is an apocalyptic number.

It is an amenable number.

102804393 is a deficient number, since it is larger than the sum of its proper divisors (34268135).

102804393 is an equidigital number, since it uses as much as digits as its factorization.

102804393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34268134.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 102804393 is about 10139.2501202012. The cubic root of 102804393 is about 468.4578897550.

The spelling of 102804393 in words is "one hundred two million, eight hundred four thousand, three hundred ninety-three".