40247738 has 16 divisors (see below), whose sum is σ = 67288320. Its totient is φ = 17942976.

The previous prime is 40247717. The next prime is 40247759. The reversal of 40247738 is 83774204.

It is an interprime number because it is at equal distance from previous prime (40247717) and next prime (40247759).

It is a junction number, because it is equal to n+sod(n) for n = 40247698 and 40247707.

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, 30506 + ... + 31797.

It is an arithmetic number, because the mean of its divisors is an integer number (4205520).

Almost surely, 2^40247738 is an apocalyptic number.

40247738 is a deficient number, since it is larger than the sum of its proper divisors (27040582).

40247738 is a wasteful number, since it uses less digits than its factorization.

40247738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62341.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 40247738 is about 6344.1104971462. The cubic root of 40247738 is about 342.6997800838.

The spelling of 40247738 in words is "forty million, two hundred forty-seven thousand, seven hundred thirty-eight".