40072772 has 6 divisors (see below), whose sum is σ = 70127358. Its totient is φ = 20036384.

The previous prime is 40072763. The next prime is 40072777. The reversal of 40072772 is 27727004.

It can be written as a sum of positive squares in only one way, i.e., 36168196 + 3904576 = 6014^2 + 1976^2 .

It is not an unprimeable number, because it can be changed into a prime (40072777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5009093 + ... + 5009100.

It is an arithmetic number, because the mean of its divisors is an integer number (11687893).

Almost surely, 2^40072772 is an apocalyptic number.

It is an amenable number.

40072772 is a deficient number, since it is larger than the sum of its proper divisors (30054586).

40072772 is a wasteful number, since it uses less digits than its factorization.

40072772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10018197 (or 10018195 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 29.

The square root of 40072772 is about 6330.3058377933. The cubic root of 40072772 is about 342.2024609723.

Adding to 40072772 its reverse (27727004), we get a palindrome (67799776).

The spelling of 40072772 in words is "forty million, seventy-two thousand, seven hundred seventy-two".