78355122 has 16 divisors (see below), whose sum is σ = 160946112. Its totient is φ = 25412400.

The previous prime is 78355111. The next prime is 78355133. The reversal of 78355122 is 22155387.

It is an interprime number because it is at equal distance from previous prime (78355111) and next prime (78355133).

It is a super-2 number, since 2×78355122² = 12279050287269768, 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, 176254 + ... + 176697.

It is an arithmetic number, because the mean of its divisors is an integer number (10059132).

Almost surely, 2^78355122 is an apocalyptic number.

78355122 is an abundant number, since it is smaller than the sum of its proper divisors (82590990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78355122 is a wasteful number, since it uses less digits than its factorization.

78355122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352993.

The product of its digits is 16800, while the sum is 33.

The square root of 78355122 is about 8851.8428589758. The cubic root of 78355122 is about 427.9133118460.

The spelling of 78355122 in words is "seventy-eight million, three hundred fifty-five thousand, one hundred twenty-two".