78254286 has 16 divisors (see below), whose sum is σ = 170736768. Its totient is φ = 23713400.

The previous prime is 78254249. The next prime is 78254287. The reversal of 78254286 is 68245287.

It is a happy number.

It is a super-2 number, since 2×78254286² = 12247466554739592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78254287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592770 + ... + 592901.

It is an arithmetic number, because the mean of its divisors is an integer number (10671048).

Almost surely, 2^78254286 is an apocalyptic number.

78254286 is an abundant number, since it is smaller than the sum of its proper divisors (92482482).

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

78254286 is a wasteful number, since it uses less digits than its factorization.

78254286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185687.

The product of its digits is 215040, while the sum is 42.

The square root of 78254286 is about 8846.1452622032. The cubic root of 78254286 is about 427.7296710556.

The spelling of 78254286 in words is "seventy-eight million, two hundred fifty-four thousand, two hundred eighty-six".