40705018 has 4 divisors (see below), whose sum is σ = 61057530. Its totient is φ = 20352508.

The previous prime is 40705001. The next prime is 40705033. The reversal of 40705018 is 81050704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27910089 + 12794929 = 5283^2 + 3577^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40704983 and 40705001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176253 + ... + 10176256.

Almost surely, 2^40705018 is an apocalyptic number.

40705018 is a deficient number, since it is larger than the sum of its proper divisors (20352512).

40705018 is a wasteful number, since it uses less digits than its factorization.

40705018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20352511.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 40705018 is about 6380.0484324180. The cubic root of 40705018 is about 343.9927718420.

The spelling of 40705018 in words is "forty million, seven hundred five thousand, eighteen".