2405998 has 12 divisors (see below), whose sum is σ = 4198392. Its totient is φ = 1031100.

The previous prime is 2405987. The next prime is 2406029. The reversal of 2405998 is 8995042.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12178 + ... + 12373.

It is an arithmetic number, because the mean of its divisors is an integer number (349866).

2^2405998 is an apocalyptic number.

2405998 is a deficient number, since it is larger than the sum of its proper divisors (1792394).

2405998 is a wasteful number, since it uses less digits than its factorization.

2405998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24567 (or 24560 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2405998 is about 1551.1279766673. The cubic root of 2405998 is about 133.9980321980.

It can be divided in two parts, 2405 and 998, that added together give a triangular number (3403 = T₈₂).

The spelling of 2405998 in words is "two million, four hundred five thousand, nine hundred ninety-eight".