40345546 has 8 divisors (see below), whose sum is σ = 60904260. Its totient is φ = 20044128.

The previous prime is 40345523. The next prime is 40345559. The reversal of 40345546 is 64554304.

It can be written as a sum of positive squares in 2 ways, for example, as 34939921 + 5405625 = 5911^2 + 2325^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63931 + ... + 64558.

Almost surely, 2^40345546 is an apocalyptic number.

40345546 is a deficient number, since it is larger than the sum of its proper divisors (20558714).

40345546 is a wasteful number, since it uses less digits than its factorization.

40345546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128648.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 40345546 is about 6351.8143864568. The cubic root of 40345546 is about 342.9771593559.

The spelling of 40345546 in words is "forty million, three hundred forty-five thousand, five hundred forty-six".