40228392 has 64 divisors (see below), whose sum is σ = 109010880. Its totient is φ = 12321792.

The previous prime is 40228379. The next prime is 40228399. The reversal of 40228392 is 29382204.

It is not an unprimeable number, because it can be changed into a prime (40228399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16398 + ... + 18690.

It is an arithmetic number, because the mean of its divisors is an integer number (1703295).

Almost surely, 2^40228392 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 40228392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54505440).

40228392 is an abundant number, since it is smaller than the sum of its proper divisors (68782488).

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

40228392 is a wasteful number, since it uses less digits than its factorization.

40228392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 40228392 is about 6342.5855926428. The cubic root of 40228392 is about 342.6448624427.

The spelling of 40228392 in words is "forty million, two hundred twenty-eight thousand, three hundred ninety-two".