2442390 has 32 divisors (see below), whose sum is σ = 6207840. Its totient is φ = 612864.

The previous prime is 2442389. The next prime is 2442403. The reversal of 2442390 is 932442.

2442390 = 155² + 156² + ... + 222².

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2442390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1885 + ... + 2904.

It is an arithmetic number, because the mean of its divisors is an integer number (193995).

2^2442390 is an apocalyptic number.

2442390 is an abundant number, since it is smaller than the sum of its proper divisors (3765450).

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

2442390 is a wasteful number, since it uses less digits than its factorization.

2442390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816.

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

The square root of 2442390 is about 1562.8147682947. The cubic root of 2442390 is about 134.6702514594.

The spelling of 2442390 in words is "two million, four hundred forty-two thousand, three hundred ninety".