78836472 has 288 divisors, whose sum is σ = 274060800. Its totient is φ = 20217600.

The previous prime is 78836431. The next prime is 78836473. The reversal of 78836472 is 27463887.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78836473) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2543097 + ... + 2543127.

It is an arithmetic number, because the mean of its divisors is an integer number (951600).

Almost surely, 2^78836472 is an apocalyptic number.

78836472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78836472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137030400).

78836472 is an abundant number, since it is smaller than the sum of its proper divisors (195224328).

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

78836472 is a wasteful number, since it uses less digits than its factorization.

78836472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 79 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 78836472 is about 8878.9904831574. The cubic root of 78836472 is about 428.7877738170.

The spelling of 78836472 in words is "seventy-eight million, eight hundred thirty-six thousand, four hundred seventy-two".