78233946 has 32 divisors (see below), whose sum is σ = 179159040. Its totient is φ = 22310256.

The previous prime is 78233921. The next prime is 78233951. The reversal of 78233946 is 64933287.

It is a super-2 number, since 2×78233946² = 12241100613461832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 78233898 and 78233907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25735 + ... + 28613.

It is an arithmetic number, because the mean of its divisors is an integer number (5598720).

Almost surely, 2^78233946 is an apocalyptic number.

78233946 is an abundant number, since it is smaller than the sum of its proper divisors (100925094).

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

78233946 is a wasteful number, since it uses less digits than its factorization.

78233946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538.

The product of its digits is 217728, while the sum is 42.

The square root of 78233946 is about 8844.9955341990. The cubic root of 78233946 is about 427.6926090797.

The spelling of 78233946 in words is "seventy-eight million, two hundred thirty-three thousand, nine hundred forty-six".