78748632 has 64 divisors (see below), whose sum is σ = 219996000. Its totient is φ = 26099712.

The previous prime is 78748627. The next prime is 78748639. The reversal of 78748632 is 23684787.

It is a happy number.

78748632 is a `hidden beast` number, since 7 + 8 + 7 + 4 + 8 + 632 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78748639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40744 + ... + 42632.

Almost surely, 2^78748632 is an apocalyptic number.

78748632 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 78748632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109998000).

78748632 is an abundant number, since it is smaller than the sum of its proper divisors (141247368).

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

78748632 is a wasteful number, since it uses less digits than its factorization.

78748632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097 (or 2087 counting only the distinct ones).

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

The square root of 78748632 is about 8874.0425962467. The cubic root of 78748632 is about 428.6284621240.

The spelling of 78748632 in words is "seventy-eight million, seven hundred forty-eight thousand, six hundred thirty-two".