2400445 has 8 divisors (see below), whose sum is σ = 2896344. Its totient is φ = 1909824.

The previous prime is 2400413. The next prime is 2400469. The reversal of 2400445 is 5440042.

It can be written as a sum of positive squares in 4 ways, for example, as 1505529 + 894916 = 1227^2 + 946^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2400445 - 2⁵ = 2400413 is a prime.

It is a Duffinian number.

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, 234 + ... + 2203.

It is an arithmetic number, because the mean of its divisors is an integer number (362043).

2^2400445 is an apocalyptic number.

It is an amenable number.

2400445 is a deficient number, since it is larger than the sum of its proper divisors (495899).

2400445 is a wasteful number, since it uses less digits than its factorization.

2400445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2400445 is about 1549.3369549585. The cubic root of 2400445 is about 133.8948644401.

Adding to 2400445 its reverse (5440042), we get a palindrome (7840487).

The spelling of 2400445 in words is "two million, four hundred thousand, four hundred forty-five".