40747072 has 14 divisors (see below), whose sum is σ = 80857598. Its totient is φ = 20373504.

The previous prime is 40747037. The next prime is 40747087. The reversal of 40747072 is 27074704.

It can be written as a sum of positive squares in only one way, i.e., 40144896 + 602176 = 6336^2 + 776^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318273 + ... + 318400.

Almost surely, 2^40747072 is an apocalyptic number.

It is an amenable number.

40747072 is a deficient number, since it is larger than the sum of its proper divisors (40110526).

40747072 is an equidigital number, since it uses as much as digits as its factorization.

40747072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636685 (or 636675 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 40747072 is about 6383.3433246223. The cubic root of 40747072 is about 344.1111953493. Note that the first 4 decimals are identical.

The spelling of 40747072 in words is "forty million, seven hundred forty-seven thousand, seventy-two".