78133303 has 4 divisors (see below), whose sum is σ = 78301080. Its totient is φ = 77965528.

The previous prime is 78133283. The next prime is 78133313. The reversal of 78133303 is 30333187.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78133303 - 2²⁵ = 44578871 is a prime.

It is a super-2 number, since 2×78133303² = 12209626075379618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78133313) 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, 83188 + ... + 84121.

It is an arithmetic number, because the mean of its divisors is an integer number (19575270).

Almost surely, 2^78133303 is an apocalyptic number.

78133303 is a deficient number, since it is larger than the sum of its proper divisors (167777).

78133303 is a wasteful number, since it uses less digits than its factorization.

78133303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167776.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 78133303 is about 8839.3044409614. The cubic root of 78133303 is about 427.5091305917.

The spelling of 78133303 in words is "seventy-eight million, one hundred thirty-three thousand, three hundred three".