78294236 has 6 divisors (see below), whose sum is σ = 137014920. Its totient is φ = 39147116.

The previous prime is 78294233. The next prime is 78294241. The reversal of 78294236 is 63249287.

It is a happy number.

It is a super-2 number, since 2×78294236² = 12259974781647392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78294193 and 78294202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78294233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9786776 + ... + 9786783.

It is an arithmetic number, because the mean of its divisors is an integer number (22835820).

Almost surely, 2^78294236 is an apocalyptic number.

It is an amenable number.

78294236 is a deficient number, since it is larger than the sum of its proper divisors (58720684).

78294236 is a wasteful number, since it uses less digits than its factorization.

78294236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573563 (or 19573561 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 78294236 is about 8848.4030197545. The cubic root of 78294236 is about 427.8024461677.

The spelling of 78294236 in words is "seventy-eight million, two hundred ninety-four thousand, two hundred thirty-six".