47827988 has 12 divisors (see below), whose sum is σ = 90137460. Its totient is φ = 22074432.

The previous prime is 47827981. The next prime is 47828029. The reversal of 47827988 is 88972874.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28922884 + 18905104 = 5378^2 + 4348^2 .

It is a super-2 number, since 2×47827988² = 4575032872256288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47827981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459833 + ... + 459936.

It is an arithmetic number, because the mean of its divisors is an integer number (7511455).

Almost surely, 2^47827988 is an apocalyptic number.

It is an amenable number.

47827988 is a deficient number, since it is larger than the sum of its proper divisors (42309472).

47827988 is a wasteful number, since it uses less digits than its factorization.

47827988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919786 (or 919784 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 53.

The square root of 47827988 is about 6915.7781919318. The cubic root of 47827988 is about 362.9894787582.

The spelling of 47827988 in words is "forty-seven million, eight hundred twenty-seven thousand, nine hundred eighty-eight".