40140284 has 6 divisors (see below), whose sum is σ = 70245504. Its totient is φ = 20070140.

The previous prime is 40140283. The next prime is 40140307. The reversal of 40140284 is 48204104.

It is a super-2 number, since 2×40140284² = 3222484799201312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5017532 + ... + 5017539.

It is an arithmetic number, because the mean of its divisors is an integer number (11707584).

Almost surely, 2^40140284 is an apocalyptic number.

It is an amenable number.

40140284 is a deficient number, since it is larger than the sum of its proper divisors (30105220).

40140284 is a wasteful number, since it uses less digits than its factorization.

40140284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10035075 (or 10035073 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 40140284 is about 6335.6360375261. The cubic root of 40140284 is about 342.3945266361.

Adding to 40140284 its reverse (48204104), we get a palindrome (88344388).

The spelling of 40140284 in words is "forty million, one hundred forty thousand, two hundred eighty-four".