78345411 has 16 divisors (see below), whose sum is σ = 107040768. Its totient is φ = 50954400.

The previous prime is 78345403. The next prime is 78345413. The reversal of 78345411 is 11454387.

It is not a de Polignac number, because 78345411 - 2³ = 78345403 is a prime.

It is a super-2 number, since 2×78345411² = 12276006849517842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78345413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21556 + ... + 24926.

It is an arithmetic number, because the mean of its divisors is an integer number (6690048).

Almost surely, 2^78345411 is an apocalyptic number.

78345411 is a deficient number, since it is larger than the sum of its proper divisors (28695357).

78345411 is a wasteful number, since it uses less digits than its factorization.

78345411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562.

The product of its digits is 13440, while the sum is 33.

The square root of 78345411 is about 8851.2943121331. The cubic root of 78345411 is about 427.8956331981.

Adding to 78345411 its reverse (11454387), we get a palindrome (89799798).

The spelling of 78345411 in words is "seventy-eight million, three hundred forty-five thousand, four hundred eleven".