40540372 has 6 divisors (see below), whose sum is σ = 70945658. Its totient is φ = 20270184.

The previous prime is 40540363. The next prime is 40540387. The reversal of 40540372 is 27304504.

It can be written as a sum of positive squares in only one way, i.e., 34999056 + 5541316 = 5916^2 + 2354^2 .

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, 5067543 + ... + 5067550.

Almost surely, 2^40540372 is an apocalyptic number.

It is an amenable number.

40540372 is a deficient number, since it is larger than the sum of its proper divisors (30405286).

40540372 is a wasteful number, since it uses less digits than its factorization.

40540372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135097 (or 10135095 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 40540372 is about 6367.1321644835. The cubic root of 40540372 is about 343.5283445087.

Adding to 40540372 its reverse (27304504), we get a palindrome (67844876).

The spelling of 40540372 in words is "forty million, five hundred forty thousand, three hundred seventy-two".