78230533 has 4 divisors (see below), whose sum is σ = 78748768. Its totient is φ = 77712300.

The previous prime is 78230507. The next prime is 78230561. The reversal of 78230533 is 33503287.

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.

It is a cyclic number.

It is not a de Polignac number, because 78230533 - 2¹³ = 78222341 is a prime.

It is a super-2 number, since 2×78230533² = 12240032586928178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78230495 and 78230504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78230563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258891 + ... + 259192.

It is an arithmetic number, because the mean of its divisors is an integer number (19687192).

Almost surely, 2^78230533 is an apocalyptic number.

It is an amenable number.

78230533 is a deficient number, since it is larger than the sum of its proper divisors (518235).

78230533 is a wasteful number, since it uses less digits than its factorization.

78230533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518234.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 78230533 is about 8844.8025981364. The cubic root of 78230533 is about 427.6863895455.

The spelling of 78230533 in words is "seventy-eight million, two hundred thirty thousand, five hundred thirty-three".