40020373 has 8 divisors (see below), whose sum is σ = 41137280. Its totient is φ = 38918880.

The previous prime is 40020371. The next prime is 40020389. The reversal of 40020373 is 37302004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40020373 - 2¹ = 40020371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40020373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40020371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1513 + ... + 9073.

It is an arithmetic number, because the mean of its divisors is an integer number (5142160).

Almost surely, 2^40020373 is an apocalyptic number.

It is an amenable number.

40020373 is a deficient number, since it is larger than the sum of its proper divisors (1116907).

40020373 is an equidigital number, since it uses as much as digits as its factorization.

40020373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7707.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 40020373 is about 6326.1657423751. The cubic root of 40020373 is about 342.0532417139.

Adding to 40020373 its reverse (37302004), we get a palindrome (77322377).

The spelling of 40020373 in words is "forty million, twenty thousand, three hundred seventy-three".