78363258 has 16 divisors (see below), whose sum is σ = 164975520. Its totient is φ = 24746256.

The previous prime is 78363227. The next prime is 78363281. The reversal of 78363258 is 85236387.

It is a super-2 number, since 2×78363258² = 12281600408749128, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343585 + ... + 343812.

It is an arithmetic number, because the mean of its divisors is an integer number (10310970).

Almost surely, 2^78363258 is an apocalyptic number.

78363258 is an abundant number, since it is smaller than the sum of its proper divisors (86612262).

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

78363258 is a wasteful number, since it uses less digits than its factorization.

78363258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687421.

The product of its digits is 241920, while the sum is 42.

The square root of 78363258 is about 8852.3024123671. The cubic root of 78363258 is about 427.9281221189.

The spelling of 78363258 in words is "seventy-eight million, three hundred sixty-three thousand, two hundred fifty-eight".