40206020 has 24 divisors (see below), whose sum is σ = 89400024. Its totient is φ = 15136256.

The previous prime is 40205987. The next prime is 40206031. The reversal of 40206020 is 2060204.

It can be written as a sum of positive squares in 4 ways, for example, as 9647236 + 30558784 = 3106^2 + 5528^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40205986 and 40206004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58787 + ... + 59466.

It is an arithmetic number, because the mean of its divisors is an integer number (3725001).

Almost surely, 2^40206020 is an apocalyptic number.

It is an amenable number.

40206020 is an abundant number, since it is smaller than the sum of its proper divisors (49194004).

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

40206020 is a wasteful number, since it uses less digits than its factorization.

40206020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118279 (or 118277 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40206020 is about 6340.8217133113. The cubic root of 40206020 is about 342.5813329142.

Adding to 40206020 its reverse (2060204), we get a palindrome (42266224).

The spelling of 40206020 in words is "forty million, two hundred six thousand, twenty".