40019738 has 24 divisors (see below), whose sum is σ = 69128640. Its totient is φ = 17229960.

The previous prime is 40019699. The next prime is 40019743. The reversal of 40019738 is 83791004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5423 + ... + 10461.

It is an arithmetic number, because the mean of its divisors is an integer number (2880360).

Almost surely, 2^40019738 is an apocalyptic number.

40019738 is a deficient number, since it is larger than the sum of its proper divisors (29108902).

40019738 is a wasteful number, since it uses less digits than its factorization.

40019738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090 (or 5071 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 40019738 is about 6326.1155537976. The cubic root of 40019738 is about 342.0514325940.

The spelling of 40019738 in words is "forty million, nineteen thousand, seven hundred thirty-eight".