947787078 has 64 divisors (see below), whose sum is σ = 2228341248. Its totient is φ = 263105280.

The previous prime is 947787053. The next prime is 947787103. The reversal of 947787078 is 870787749.

947787078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (947787053) and next prime (947787103).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476001 + ... + 477987.

It is an arithmetic number, because the mean of its divisors is an integer number (34817832).

Almost surely, 2^947787078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947787078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114170624).

947787078 is an abundant number, since it is smaller than the sum of its proper divisors (1280554170).

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

947787078 is a wasteful number, since it uses less digits than its factorization.

947787078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317.

The product of its (nonzero) digits is 5531904, while the sum is 57.

The square root of 947787078 is about 30786.1507499720. The cubic root of 947787078 is about 982.2836781355.

The spelling of 947787078 in words is "nine hundred forty-seven million, seven hundred eighty-seven thousand, seventy-eight".