947478528 has 168 divisors, whose sum is σ = 2790876816. Its totient is φ = 309657600.

The previous prime is 947478523. The next prime is 947478577. The reversal of 947478528 is 825874749.

It is a happy number.

947478528 is a `hidden beast` number, since 9 + 47 + 4 + 78 + 528 = 666.

It is a super-2 number, since 2×947478528² = 1795431122042093568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947478523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5234598 + ... + 5234778.

It is an arithmetic number, because the mean of its divisors is an integer number (16612362).

Almost surely, 2^947478528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947478528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395438408).

947478528 is an abundant number, since it is smaller than the sum of its proper divisors (1843398288).

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

947478528 is a wasteful number, since it uses less digits than its factorization.

947478528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 257 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 947478528 is about 30781.1391602065. The cubic root of 947478528 is about 982.1770731355.

The spelling of 947478528 in words is "nine hundred forty-seven million, four hundred seventy-eight thousand, five hundred twenty-eight".