40545044 has 48 divisors (see below), whose sum is σ = 78089088. Its totient is φ = 18361728.

The previous prime is 40545019. The next prime is 40545061. The reversal of 40545044 is 44054504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146234 + ... + 146510.

It is an arithmetic number, because the mean of its divisors is an integer number (1626856).

Almost surely, 2^40545044 is an apocalyptic number.

It is an amenable number.

40545044 is a deficient number, since it is larger than the sum of its proper divisors (37544044).

40545044 is a wasteful number, since it uses less digits than its factorization.

40545044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 40545044 is about 6367.4990380839. The cubic root of 40545044 is about 343.5415404308.

Adding to 40545044 its reverse (44054504), we get a palindrome (84599548).

The spelling of 40545044 in words is "forty million, five hundred forty-five thousand, forty-four".