78906254 has 8 divisors (see below), whose sum is σ = 135267888. Its totient is φ = 33816960.

The previous prime is 78906251. The next prime is 78906271. The reversal of 78906254 is 45260987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78906251) 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 3 ways as a sum of consecutive naturals, for example, 2818067 + ... + 2818094.

It is an arithmetic number, because the mean of its divisors is an integer number (16908486).

Almost surely, 2^78906254 is an apocalyptic number.

78906254 is a deficient number, since it is larger than the sum of its proper divisors (56361634).

78906254 is a wasteful number, since it uses less digits than its factorization.

78906254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5636170.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 78906254 is about 8882.9192273711. The cubic root of 78906254 is about 428.9142501531.

The spelling of 78906254 in words is "seventy-eight million, nine hundred six thousand, two hundred fifty-four".