6390236 has 12 divisors (see below), whose sum is σ = 11215512. Its totient is φ = 3185808.

The previous prime is 6390227. The next prime is 6390239. The reversal of 6390236 is 6320936.

It is a super-2 number, since 2×6390236² = 81670232271392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6390199 and 6390208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650 + ... + 3633.

It is an arithmetic number, because the mean of its divisors is an integer number (934626).

Almost surely, 2^6390236 is an apocalyptic number.

It is an amenable number.

6390236 is a deficient number, since it is larger than the sum of its proper divisors (4825276).

6390236 is a wasteful number, since it uses less digits than its factorization.

6390236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660 (or 4658 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 6390236 is about 2527.8916116005. The cubic root of 6390236 is about 185.5690876356.

The spelling of 6390236 in words is "six million, three hundred ninety thousand, two hundred thirty-six".