40206996 has 72 divisors (see below), whose sum is σ = 107667840. Its totient is φ = 12969792.

The previous prime is 40206979. The next prime is 40206997. The reversal of 40206996 is 69960204.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40206996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40206997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 451720 + ... + 451808.

Almost surely, 2^40206996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40206996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53833920).

40206996 is an abundant number, since it is smaller than the sum of its proper divisors (67460844).

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

40206996 is a wasteful number, since it uses less digits than its factorization.

40206996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 40206996 is about 6340.8986744782. The cubic root of 40206996 is about 342.5841049425.

The spelling of 40206996 in words is "forty million, two hundred six thousand, nine hundred ninety-six".