40020606 has 24 divisors (see below), whose sum is σ = 89056344. Its totient is φ = 12979440.

The previous prime is 40020599. The next prime is 40020611. The reversal of 40020606 is 60602004.

40020606 is a `hidden beast` number, since 40 + 0 + 20 + 606 = 666.

It is a super-3 number, since 3×40020606³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29380 + ... + 30711.

It is an arithmetic number, because the mean of its divisors is an integer number (3710681).

Almost surely, 2^40020606 is an apocalyptic number.

40020606 is an abundant number, since it is smaller than the sum of its proper divisors (49035738).

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

40020606 is a wasteful number, since it uses less digits than its factorization.

40020606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60136 (or 60133 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40020606 is about 6326.1841579265. The cubic root of 40020606 is about 342.0539055279.

The spelling of 40020606 in words is "forty million, twenty thousand, six hundred six".