78526434 has 64 divisors (see below), whose sum is σ = 191980800. Its totient is φ = 20901888.

The previous prime is 78526433. The next prime is 78526457. The reversal of 78526434 is 43462587.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78526392 and 78526401.

It is not an unprimeable number, because it can be changed into a prime (78526433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77322 + ... + 78330.

It is an arithmetic number, because the mean of its divisors is an integer number (2999700).

Almost surely, 2^78526434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78526434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95990400).

78526434 is an abundant number, since it is smaller than the sum of its proper divisors (113454366).

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

78526434 is a wasteful number, since it uses less digits than its factorization.

78526434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147.

The product of its digits is 161280, while the sum is 39.

The square root of 78526434 is about 8861.5142046944. The cubic root of 78526434 is about 428.2249414431.

The spelling of 78526434 in words is "seventy-eight million, five hundred twenty-six thousand, four hundred thirty-four".