40442304 has 56 divisors (see below), whose sum is σ = 122293888. Its totient is φ = 11554560.

The previous prime is 40442273. The next prime is 40442323. The reversal of 40442304 is 40324404.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13702 + ... + 16389.

Almost surely, 2^40442304 is an apocalyptic number.

It is an amenable number.

40442304 is an abundant number, since it is smaller than the sum of its proper divisors (81851584).

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

40442304 is a wasteful number, since it uses less digits than its factorization.

40442304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30113 (or 30103 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40442304 is about 6359.4263892273. The cubic root of 40442304 is about 343.2511201230.

Adding to 40442304 its reverse (40324404), we get a palindrome (80766708).

The spelling of 40442304 in words is "forty million, four hundred forty-two thousand, three hundred four".