947945288628 has 96 divisors (see below), whose sum is σ = 2661308133120. Its totient is φ = 290063928960.

The previous prime is 947945288621. The next prime is 947945288663. The reversal of 947945288628 is 826882549749.

947945288628 is a `hidden beast` number, since 9 + 4 + 7 + 94 + 528 + 8 + 6 + 2 + 8 = 666.

It is a super-2 number, since 2×947945288628² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947945288621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1611000 + ... + 2119247.

It is an arithmetic number, because the mean of its divisors is an integer number (27721959720).

Almost surely, 2^947945288628 is an apocalyptic number.

It is an amenable number.

947945288628 is an abundant number, since it is smaller than the sum of its proper divisors (1713362844492).

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

947945288628 is a wasteful number, since it uses less digits than its factorization.

947945288628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730454 (or 3730446 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 72.

The spelling of 947945288628 in words is "nine hundred forty-seven billion, nine hundred forty-five million, two hundred eighty-eight thousand, six hundred twenty-eight".