78325830 has 96 divisors (see below), whose sum is σ = 225976608. Its totient is φ = 18662400.

The previous prime is 78325823. The next prime is 78325883. The reversal of 78325830 is 3852387.

78325830 is a `hidden beast` number, since 78 + 3 + 2 + 583 + 0 = 666.

It is a super-2 number, since 2×78325830² = 12269871290377800, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59742 + ... + 61038.

It is an arithmetic number, because the mean of its divisors is an integer number (2353923).

Almost surely, 2^78325830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78325830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112988304).

78325830 is an abundant number, since it is smaller than the sum of its proper divisors (147650778).

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

78325830 is a wasteful number, since it uses less digits than its factorization.

78325830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 78325830 is about 8850.1881335935. The cubic root of 78325830 is about 427.8599820033.

The spelling of 78325830 in words is "seventy-eight million, three hundred twenty-five thousand, eight hundred thirty".