40052920 has 16 divisors (see below), whose sum is σ = 90119160. Its totient is φ = 16021152.

The previous prime is 40052911. The next prime is 40052927. The reversal of 40052920 is 2925004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40052891 and 40052900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40052927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500622 + ... + 500701.

Almost surely, 2^40052920 is an apocalyptic number.

40052920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40052920 is an abundant number, since it is smaller than the sum of its proper divisors (50066240).

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

40052920 is a wasteful number, since it uses less digits than its factorization.

40052920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001334 (or 1001330 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 40052920 is about 6328.7376308392. The cubic root of 40052920 is about 342.1459427511.

Adding to 40052920 its reverse (2925004), we get a palindrome (42977924).

The spelling of 40052920 in words is "forty million, fifty-two thousand, nine hundred twenty".