40061340 has 72 divisors (see below), whose sum is σ = 132573168. Its totient is φ = 9711360.

The previous prime is 40061339. The next prime is 40061341. The reversal of 40061340 is 4316004.

It is an interprime number because it is at equal distance from previous prime (40061339) and next prime (40061341).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40061341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8137 + ... + 12096.

It is an arithmetic number, because the mean of its divisors is an integer number (1841294).

Almost surely, 2^40061340 is an apocalyptic number.

It is an amenable number.

40061340 is an abundant number, since it is smaller than the sum of its proper divisors (92511828).

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

40061340 is a wasteful number, since it uses less digits than its factorization.

40061340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20259 (or 20254 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40061340 is about 6329.4028154321. The cubic root of 40061340 is about 342.1699165920.

Adding to 40061340 its reverse (4316004), we get a palindrome (44377344).

It can be divided in two parts, 40061 and 340, that added together give a square (40401 = 201²).

The spelling of 40061340 in words is "forty million, sixty-one thousand, three hundred forty".