4392240 has 40 divisors (see below), whose sum is σ = 13616688. Its totient is φ = 1171200.

The previous prime is 4392221. The next prime is 4392259. The reversal of 4392240 is 422934.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4392221) and next prime (4392259).

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 self number, because there is not a number n which added to its sum of digits gives 4392240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8911 + ... + 9390.

Almost surely, 2^4392240 is an apocalyptic number.

4392240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4392240 is an abundant number, since it is smaller than the sum of its proper divisors (9224448).

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

4392240 is a wasteful number, since it uses less digits than its factorization.

4392240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18317 (or 18311 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4392240 is about 2095.7671626400. The cubic root of 4392240 is about 163.7678651138.

The spelling of 4392240 in words is "four million, three hundred ninety-two thousand, two hundred forty".