78351914 has 16 divisors (see below), whose sum is σ = 122300928. Its totient is φ = 37616592.

The previous prime is 78351913. The next prime is 78351947. The reversal of 78351914 is 41915387.

It is a super-2 number, since 2×78351914² = 12278044854926792, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78351913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2882 + ... + 12845.

It is an arithmetic number, because the mean of its divisors is an integer number (7643808).

Almost surely, 2^78351914 is an apocalyptic number.

78351914 is a deficient number, since it is larger than the sum of its proper divisors (43949014).

78351914 is a wasteful number, since it uses less digits than its factorization.

78351914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15829.

The product of its digits is 30240, while the sum is 38.

The square root of 78351914 is about 8851.6616519160. The cubic root of 78351914 is about 427.9074719188.

The spelling of 78351914 in words is "seventy-eight million, three hundred fifty-one thousand, nine hundred fourteen".