78533430 has 32 divisors (see below), whose sum is σ = 189756000. Its totient is φ = 20800512.

The previous prime is 78533423. The next prime is 78533449. The reversal of 78533430 is 3433587.

It is a junction number, because it is equal to n+sod(n) for n = 78533391 and 78533400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4315 + ... + 13254.

It is an arithmetic number, because the mean of its divisors is an integer number (5929875).

Almost surely, 2^78533430 is an apocalyptic number.

78533430 is an abundant number, since it is smaller than the sum of its proper divisors (111222570).

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

78533430 is a wasteful number, since it uses less digits than its factorization.

78533430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17728.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 78533430 is about 8861.9089365667. The cubic root of 78533430 is about 428.2376580642.

The spelling of 78533430 in words is "seventy-eight million, five hundred thirty-three thousand, four hundred thirty".