47305540 has 12 divisors (see below), whose sum is σ = 99341676. Its totient is φ = 18922208.

The previous prime is 47305523. The next prime is 47305553. The reversal of 47305540 is 4550374.

It can be written as a sum of positive squares in 2 ways, for example, as 34012224 + 13293316 = 5832^2 + 3646^2 .

It is a super-2 number, since 2×47305540² = 4475628229383200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47305499 and 47305508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182619 + ... + 1182658.

It is an arithmetic number, because the mean of its divisors is an integer number (8278473).

Almost surely, 2^47305540 is an apocalyptic number.

It is an amenable number.

47305540 is an abundant number, since it is smaller than the sum of its proper divisors (52036136).

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

47305540 is a wasteful number, since it uses less digits than its factorization.

47305540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365286 (or 2365284 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 47305540 is about 6877.9022964855. The cubic root of 47305540 is about 361.6629342160.

The spelling of 47305540 in words is "forty-seven million, three hundred five thousand, five hundred forty".