78284122 has 16 divisors (see below), whose sum is σ = 134455680. Its totient is φ = 33486768.

The previous prime is 78284113. The next prime is 78284149. The reversal of 78284122 is 22148287.

It is a super-2 number, since 2×78284122² = 12256807514621768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2779 + ... + 12817.

It is an arithmetic number, because the mean of its divisors is an integer number (8403480).

Almost surely, 2^78284122 is an apocalyptic number.

78284122 is a deficient number, since it is larger than the sum of its proper divisors (56171558).

78284122 is a wasteful number, since it uses less digits than its factorization.

78284122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605.

The product of its digits is 14336, while the sum is 34.

The square root of 78284122 is about 8847.8314857371. The cubic root of 78284122 is about 427.7840242911.

The spelling of 78284122 in words is "seventy-eight million, two hundred eighty-four thousand, one hundred twenty-two".