40072072 has 32 divisors (see below), whose sum is σ = 79315200. Its totient is φ = 18941824.

The previous prime is 40072069. The next prime is 40072079. The reversal of 40072072 is 27027004.

40072072 is a modest number, since divided by 72072 gives 40 as remainder.

It is not an unprimeable number, because it can be changed into a prime (40072079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15153 + ... + 17599.

It is an arithmetic number, because the mean of its divisors is an integer number (2478600).

Almost surely, 2^40072072 is an apocalyptic number.

It is an amenable number.

40072072 is a deficient number, since it is larger than the sum of its proper divisors (39243128).

40072072 is a wasteful number, since it uses less digits than its factorization.

40072072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 40072072 is about 6330.2505479641. The cubic root of 40072072 is about 342.2004684048.

Adding to 40072072 its reverse (27027004), we get a palindrome (67099076).

The spelling of 40072072 in words is "forty million, seventy-two thousand, seventy-two".