40520044 has 24 divisors (see below), whose sum is σ = 75796560. Its totient is φ = 18886656.

The previous prime is 40520017. The next prime is 40520057. The reversal of 40520044 is 44002504.

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, 4492 + ... + 10060.

It is an arithmetic number, because the mean of its divisors is an integer number (3158190).

Almost surely, 2^40520044 is an apocalyptic number.

It is an amenable number.

40520044 is a deficient number, since it is larger than the sum of its proper divisors (35276516).

40520044 is a wasteful number, since it uses less digits than its factorization.

40520044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697 (or 5695 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40520044 is about 6365.5356412481. The cubic root of 40520044 is about 343.4709168848.

Adding to 40520044 its reverse (44002504), we get a palindrome (84522548).

It can be divided in two parts, 405 and 20044, that added together give a square (20449 = 143²).

The spelling of 40520044 in words is "forty million, five hundred twenty thousand, forty-four".