78574244 has 36 divisors (see below), whose sum is σ = 163692144. Its totient is φ = 32888016.

The previous prime is 78574241. The next prime is 78574247. The reversal of 78574244 is 44247587.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78574241) and next prime (78574247).

It is not an unprimeable number, because it can be changed into a prime (78574241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3767 + ... + 13089.

It is an arithmetic number, because the mean of its divisors is an integer number (4547004).

Almost surely, 2^78574244 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 78574244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81846072).

78574244 is an abundant number, since it is smaller than the sum of its proper divisors (85117900).

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

78574244 is a wasteful number, since it uses less digits than its factorization.

78574244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9384 (or 9375 counting only the distinct ones).

The product of its digits is 250880, while the sum is 41.

The square root of 78574244 is about 8864.2114144463. The cubic root of 78574244 is about 428.3118305742.

The spelling of 78574244 in words is "seventy-eight million, five hundred seventy-four thousand, two hundred forty-four".