40641072 has 20 divisors (see below), whose sum is σ = 104989560. Its totient is φ = 13547008.

The previous prime is 40641053. The next prime is 40641079. The reversal of 40641072 is 27014604.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (40641079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423297 + ... + 423392.

It is an arithmetic number, because the mean of its divisors is an integer number (5249478).

Almost surely, 2^40641072 is an apocalyptic number.

It is an amenable number.

40641072 is an abundant number, since it is smaller than the sum of its proper divisors (64348488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40641072 is a wasteful number, since it uses less digits than its factorization.

40641072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846700 (or 846694 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 40641072 is about 6375.0350587271. The cubic root of 40641072 is about 343.8125443441.

Adding to 40641072 its reverse (27014604), we get a palindrome (67655676).

The spelling of 40641072 in words is "forty million, six hundred forty-one thousand, seventy-two".