40520354 has 24 divisors (see below), whose sum is σ = 70983468. Its totient is φ = 17297280.

The previous prime is 40520323. The next prime is 40520357. The reversal of 40520354 is 45302504.

It can be written as a sum of positive squares in 2 ways, for example, as 40132225 + 388129 = 6335^2 + 623^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30014 + ... + 31334.

Almost surely, 2^40520354 is an apocalyptic number.

40520354 is a deficient number, since it is larger than the sum of its proper divisors (30463114).

40520354 is a wasteful number, since it uses less digits than its factorization.

40520354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 40520354 is about 6365.5599910770. The cubic root of 40520354 is about 343.4717927946.

Adding to 40520354 its reverse (45302504), we get a palindrome (85822858).

The spelling of 40520354 in words is "forty million, five hundred twenty thousand, three hundred fifty-four".