78044652 has 108 divisors (see below), whose sum is σ = 231796656. Its totient is φ = 22075200.

The previous prime is 78044633. The next prime is 78044657. The reversal of 78044652 is 25644087.

It is a super-2 number, since 2×78044652² = 12181935411602208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (78044657) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 266218 + ... + 266510.

Almost surely, 2^78044652 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 78044652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115898328).

78044652 is an abundant number, since it is smaller than the sum of its proper divisors (153752004).

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

78044652 is a wasteful number, since it uses less digits than its factorization.

78044652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 78044652 is about 8834.2884263533. The cubic root of 78044652 is about 427.3473837090.

The spelling of 78044652 in words is "seventy-eight million, forty-four thousand, six hundred fifty-two".