78022947 has 8 divisors (see below), whose sum is σ = 104524480. Its totient is φ = 51768360.

The previous prime is 78022921. The next prime is 78022981. The reversal of 78022947 is 74922087.

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

It is not a de Polignac number, because 78022947 - 2¹⁴ = 78006563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78022247) 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, 60997 + ... + 62262.

It is an arithmetic number, because the mean of its divisors is an integer number (13065560).

Almost surely, 2^78022947 is an apocalyptic number.

78022947 is a deficient number, since it is larger than the sum of its proper divisors (26501533).

78022947 is a wasteful number, since it uses less digits than its factorization.

78022947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123473.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 78022947 is about 8833.0598888494. The cubic root of 78022947 is about 427.3077635056.

The spelling of 78022947 in words is "seventy-eight million, twenty-two thousand, nine hundred forty-seven".