40606020 has 288 divisors, whose sum is σ = 158016768. Its totient is φ = 8211456.

The previous prime is 40606019. The next prime is 40606037. The reversal of 40606020 is 2060604.

40606020 is a `hidden beast` number, since 4 + 0 + 60 + 602 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 40605984 and 40606002.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 606027 + ... + 606093.

Almost surely, 2^40606020 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 40606020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79008384).

40606020 is an abundant number, since it is smaller than the sum of its proper divisors (117410748).

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

40606020 is a wasteful number, since it uses less digits than its factorization.

40606020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 134 counting only the distinct ones).

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

The square root of 40606020 is about 6372.2853043473. The cubic root of 40606020 is about 343.7136724145.

Adding to 40606020 its reverse (2060604), we get a palindrome (42666624).

The spelling of 40606020 in words is "forty million, six hundred six thousand, twenty".