47128744 has 16 divisors (see below), whose sum is σ = 95164020. Its totient is φ = 21751680.

The previous prime is 47128717. The next prime is 47128747. The reversal of 47128744 is 44782174.

It can be written as a sum of positive squares in 2 ways, for example, as 42120100 + 5008644 = 6490^2 + 2238^2 .

It is a super-2 number, since 2×47128744² = 4442237022035072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47128747) 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 3 ways as a sum of consecutive naturals, for example, 226477 + ... + 226684.

Almost surely, 2^47128744 is an apocalyptic number.

It is an amenable number.

47128744 is an abundant number, since it is smaller than the sum of its proper divisors (48035276).

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

47128744 is a wasteful number, since it uses less digits than its factorization.

47128744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453180 (or 453176 counting only the distinct ones).

The product of its digits is 50176, while the sum is 37.

The square root of 47128744 is about 6865.0378003329. The cubic root of 47128744 is about 361.2118215740.

It can be divided in two parts, 4712 and 8744, that added together give a square (13456 = 116²).

The spelling of 47128744 in words is "forty-seven million, one hundred twenty-eight thousand, seven hundred forty-four".