47735440 has 20 divisors (see below), whose sum is σ = 110985084. Its totient is φ = 19094144.

The previous prime is 47735411. The next prime is 47735449. The reversal of 47735440 is 4453774.

It can be written as a sum of positive squares in 2 ways, for example, as 12166144 + 35569296 = 3488^2 + 5964^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 47735396 and 47735405.

It is not an unprimeable number, because it can be changed into a prime (47735449) 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, 298267 + ... + 298426.

Almost surely, 2^47735440 is an apocalyptic number.

47735440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47735440 is an abundant number, since it is smaller than the sum of its proper divisors (63249644).

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

47735440 is a wasteful number, since it uses less digits than its factorization.

47735440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596706 (or 596700 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 47735440 is about 6909.0838755945. The cubic root of 47735440 is about 362.7551972332.

The spelling of 47735440 in words is "forty-seven million, seven hundred thirty-five thousand, four hundred forty".