40646000 has 40 divisors (see below), whose sum is σ = 98286864. Its totient is φ = 16257600.

The previous prime is 40645981. The next prime is 40646003. The reversal of 40646000 is 64604.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40646003) 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, 8162 + ... + 12161.

Almost surely, 2^40646000 is an apocalyptic number.

40646000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40646000 is an abundant number, since it is smaller than the sum of its proper divisors (57640864).

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

40646000 is a wasteful number, since it uses less digits than its factorization.

40646000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20346 (or 20330 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40646000 is about 6375.4215546895. The cubic root of 40646000 is about 343.8264403008.

The spelling of 40646000 in words is "forty million, six hundred forty-six thousand".