2440690 has 48 divisors (see below), whose sum is σ = 5429592. Its totient is φ = 784896.

The previous prime is 2440681. The next prime is 2440693. The reversal of 2440690 is 960442.

2440690 = T₄₈₄ + T₄₈₅ + ... + T₅₀₃.

It can be written as a sum of positive squares in 4 ways, for example, as 2436721 + 3969 = 1561^2 + 63^2 .

It is a super-2 number, since 2×2440690² = 11913935352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2440693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8184 + ... + 8476.

2^2440690 is an apocalyptic number.

2440690 is an abundant number, since it is smaller than the sum of its proper divisors (2988902).

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

2440690 is a wasteful number, since it uses less digits than its factorization.

2440690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2440690 is about 1562.2707831871. The cubic root of 2440690 is about 134.6389989342.

The spelling of 2440690 in words is "two million, four hundred forty thousand, six hundred ninety".