40220073 has 24 divisors (see below), whose sum is σ = 60021000. Its totient is φ = 25933824.

The previous prime is 40220069. The next prime is 40220083. The reversal of 40220073 is 37002204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6487209 + 33732864 = 2547^2 + 5808^2 .

It is not a de Polignac number, because 40220073 - 2² = 40220069 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40220053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89353 + ... + 89801.

It is an arithmetic number, because the mean of its divisors is an integer number (2500875).

Almost surely, 2^40220073 is an apocalyptic number.

It is an amenable number.

40220073 is a deficient number, since it is larger than the sum of its proper divisors (19800927).

40220073 is a wasteful number, since it uses less digits than its factorization.

40220073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 40220073 is about 6341.9297536318. The cubic root of 40220073 is about 342.6212418190.

Adding to 40220073 its reverse (37002204), we get a palindrome (77222277).

It can be divided in two parts, 4022007 and 3, that multiplied together give a palindrome (12066021).

The spelling of 40220073 in words is "forty million, two hundred twenty thousand, seventy-three".