78434748 has 72 divisors (see below), whose sum is σ = 227441760. Its totient is φ = 22325760.

The previous prime is 78434747. The next prime is 78434767. The reversal of 78434748 is 84743487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78434747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102688 + ... + 103448.

Almost surely, 2^78434748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78434748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113720880).

78434748 is an abundant number, since it is smaller than the sum of its proper divisors (149007012).

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

78434748 is a wasteful number, since it uses less digits than its factorization.

78434748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187 (or 1182 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 78434748 is about 8856.3394243897. The cubic root of 78434748 is about 428.0582140516.

The spelling of 78434748 in words is "seventy-eight million, four hundred thirty-four thousand, seven hundred forty-eight".