40396284 has 72 divisors (see below), whose sum is σ = 109090800. Its totient is φ = 12559872.

The previous prime is 40396277. The next prime is 40396289. The reversal of 40396284 is 48269304.

It is a happy number.

It is a super-3 number, since 3×40396284³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40396289) 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, 90967 + ... + 91409.

It is an arithmetic number, because the mean of its divisors is an integer number (1515150).

Almost surely, 2^40396284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40396284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54545400).

40396284 is an abundant number, since it is smaller than the sum of its proper divisors (68694516).

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

40396284 is a wasteful number, since it uses less digits than its factorization.

40396284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 40396284 is about 6355.8071084639. The cubic root of 40396284 is about 343.1208735706.

The spelling of 40396284 in words is "forty million, three hundred ninety-six thousand, two hundred eighty-four".