4723440 has 40 divisors (see below), whose sum is σ = 14643408. Its totient is φ = 1259520.

The previous prime is 4723427. The next prime is 4723451. The reversal of 4723440 is 443274.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 4² + 7 + 2¹⁹ + 3⁶ + 4⁶ + 4¹¹ + 0 .

It is a self number, because there is not a number n which added to its sum of digits gives 4723440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9601 + ... + 10080.

Almost surely, 2^4723440 is an apocalyptic number.

4723440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4723440 is an abundant number, since it is smaller than the sum of its proper divisors (9919968).

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

4723440 is a wasteful number, since it uses less digits than its factorization.

4723440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19697 (or 19691 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 4723440 is about 2173.3476482146. The cubic root of 4723440 is about 167.7848720334.

It can be divided in two parts, 47234 and 40, that added together give a palindrome (47274).

The spelling of 4723440 in words is "four million, seven hundred twenty-three thousand, four hundred forty".