4727440 has 20 divisors (see below), whose sum is σ = 10991484. Its totient is φ = 1890944.

The previous prime is 4727417. The next prime is 4727449. The reversal of 4727440 is 447274.

It can be written as a sum of positive squares in 2 ways, for example, as 3400336 + 1327104 = 1844^2 + 1152^2 .

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4727399 and 4727408.

It is not an unprimeable number, because it can be changed into a prime (4727449) 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, 29467 + ... + 29626.

Almost surely, 2^4727440 is an apocalyptic number.

4727440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4727440 is an abundant number, since it is smaller than the sum of its proper divisors (6264044).

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

4727440 is a wasteful number, since it uses less digits than its factorization.

4727440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59106 (or 59100 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 4727440 is about 2174.2676928106. The cubic root of 4727440 is about 167.8322210085.

The spelling of 4727440 in words is "four million, seven hundred twenty-seven thousand, four hundred forty".