78459030 has 80 divisors (see below), whose sum is σ = 227226384. Its totient is φ = 19310400.

The previous prime is 78459019. The next prime is 78459053. The reversal of 78459030 is 3095487.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6805 + ... + 14255.

Almost surely, 2^78459030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78459030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113613192).

78459030 is an abundant number, since it is smaller than the sum of its proper divisors (148767354).

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

78459030 is a wasteful number, since it uses less digits than its factorization.

78459030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7483 (or 7474 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 78459030 is about 8857.7102007234. The cubic root of 78459030 is about 428.1023825585.

The spelling of 78459030 in words is "seventy-eight million, four hundred fifty-nine thousand, thirty".