78353830 has 8 divisors (see below), whose sum is σ = 141036912. Its totient is φ = 31341528.

The previous prime is 78353813. The next prime is 78353837. The reversal of 78353830 is 3835387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78353830² = 12278645351337800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78353830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78353837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3917682 + ... + 3917701.

It is an arithmetic number, because the mean of its divisors is an integer number (17629614).

Almost surely, 2^78353830 is an apocalyptic number.

78353830 is a deficient number, since it is larger than the sum of its proper divisors (62683082).

78353830 is a wasteful number, since it uses less digits than its factorization.

78353830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835390.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 78353830 is about 8851.7698795213. The cubic root of 78353830 is about 427.9109598745.

The spelling of 78353830 in words is "seventy-eight million, three hundred fifty-three thousand, eight hundred thirty".