40073738 has 8 divisors (see below), whose sum is σ = 61735332. Its totient is φ = 19495296.

The previous prime is 40073729. The next prime is 40073771. The reversal of 40073738 is 83737004.

It can be written as a sum of positive squares in 2 ways, for example, as 36808489 + 3265249 = 6067^2 + 1807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270695 + ... + 270842.

Almost surely, 2^40073738 is an apocalyptic number.

40073738 is a deficient number, since it is larger than the sum of its proper divisors (21661594).

40073738 is a wasteful number, since it uses less digits than its factorization.

40073738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541576.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 40073738 is about 6330.3821369646. The cubic root of 40073738 is about 342.2052106775.

The spelling of 40073738 in words is "forty million, seventy-three thousand, seven hundred thirty-eight".