40070872 has 8 divisors (see below), whose sum is σ = 75132900. Its totient is φ = 20035432.

The previous prime is 40070869. The next prime is 40070893. The reversal of 40070872 is 27807004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 40070872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2504422 + ... + 2504437.

Almost surely, 2^40070872 is an apocalyptic number.

It is an amenable number.

40070872 is a deficient number, since it is larger than the sum of its proper divisors (35062028).

40070872 is a wasteful number, since it uses less digits than its factorization.

40070872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008865 (or 5008861 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 40070872 is about 6330.1557642763. The cubic root of 40070872 is about 342.1970525207.

Adding to 40070872 its reverse (27807004), we get a palindrome (67877876).

The spelling of 40070872 in words is "forty million, seventy thousand, eight hundred seventy-two".