78433488 has 160 divisors (see below), whose sum is σ = 264625920. Its totient is φ = 21772800.

The previous prime is 78433471. The next prime is 78433489. The reversal of 78433488 is 88433487.

It is a happy number.

It is a super-2 number, since 2×78433488² = 12303624079692288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78433489) 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, 111538 + ... + 112238.

It is an arithmetic number, because the mean of its divisors is an integer number (1653912).

Almost surely, 2^78433488 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 78433488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132312960).

78433488 is an abundant number, since it is smaller than the sum of its proper divisors (186192432).

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

78433488 is a wasteful number, since it uses less digits than its factorization.

78433488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 750 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 78433488 is about 8856.2682886191. The cubic root of 78433488 is about 428.0559218862.

Subtracting 78433488 from its reverse (88433487), we obtain a palindrome (9999999).

The spelling of 78433488 in words is "seventy-eight million, four hundred thirty-three thousand, four hundred eighty-eight".