78344354 has 24 divisors (see below), whose sum is σ = 129627120. Its totient is φ = 35485560.

The previous prime is 78344351. The next prime is 78344401. The reversal of 78344354 is 45344387.

It is a super-2 number, since 2×78344354² = 12275675607354632, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78344351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126257 + ... + 126875.

It is an arithmetic number, because the mean of its divisors is an integer number (5401130).

Almost surely, 2^78344354 is an apocalyptic number.

78344354 is a deficient number, since it is larger than the sum of its proper divisors (51282766).

78344354 is a wasteful number, since it uses less digits than its factorization.

78344354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166 (or 1155 counting only the distinct ones).

The product of its digits is 161280, while the sum is 38.

The square root of 78344354 is about 8851.2346031500. The cubic root of 78344354 is about 427.8937088662.

The spelling of 78344354 in words is "seventy-eight million, three hundred forty-four thousand, three hundred fifty-four".