40020650 has 48 divisors (see below), whose sum is σ = 79310400. Its totient is φ = 14981760.

The previous prime is 40020649. The next prime is 40020677. The reversal of 40020650 is 5602004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97646 + ... + 98054.

It is an arithmetic number, because the mean of its divisors is an integer number (1652300).

Almost surely, 2^40020650 is an apocalyptic number.

40020650 is a deficient number, since it is larger than the sum of its proper divisors (39289750).

40020650 is a wasteful number, since it uses less digits than its factorization.

40020650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40020650 is about 6326.1876355353. The cubic root of 40020650 is about 342.0540308830.

Adding to 40020650 its reverse (5602004), we get a palindrome (45622654).

The spelling of 40020650 in words is "forty million, twenty thousand, six hundred fifty".