2400866 has 16 divisors (see below), whose sum is σ = 3919104. Its totient is φ = 1096464.

The previous prime is 2400863. The next prime is 2400869. The reversal of 2400866 is 6680042.

It is an interprime number because it is at equal distance from previous prime (2400863) and next prime (2400869).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (2400863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351 + ... + 3213.

It is an arithmetic number, because the mean of its divisors is an integer number (244944).

2^2400866 is an apocalyptic number.

2400866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2400866 is a deficient number, since it is larger than the sum of its proper divisors (1518238).

2400866 is a wasteful number, since it uses less digits than its factorization.

2400866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2400866 is about 1549.4728135724. The cubic root of 2400866 is about 133.9026916614.

The spelling of 2400866 in words is "two million, four hundred thousand, eight hundred sixty-six".