38640246 has 8 divisors (see below), whose sum is σ = 77280504. Its totient is φ = 12880080.

The previous prime is 38640211. The next prime is 38640257. The reversal of 38640246 is 64204683.

It is a sphenic number, since it is the product of 3 distinct primes.

38640246 is an admirable number.

It is a super-2 number, since 2×38640246² = 2986137221881032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3220015 + ... + 3220026.

It is an arithmetic number, because the mean of its divisors is an integer number (9660063).

Almost surely, 2^38640246 is an apocalyptic number.

38640246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38640246 is a wasteful number, since it uses less digits than its factorization.

38640246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6440046.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 38640246 is about 6216.1278944372. The cubic root of 38640246 is about 338.0751848899.

The spelling of 38640246 in words is "thirty-eight million, six hundred forty thousand, two hundred forty-six".