40269312 has 100 divisors (see below), whose sum is σ = 120317076. Its totient is φ = 13409280.

The previous prime is 40269301. The next prime is 40269319. The reversal of 40269312 is 21396204.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40269319) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40987 + ... + 41957.

Almost surely, 2^40269312 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 40269312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60158538).

40269312 is an abundant number, since it is smaller than the sum of its proper divisors (80047764).

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

40269312 is an frugal number, since it uses more digits than its factorization.

40269312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40269312 is about 6345.8105865208. The cubic root of 40269312 is about 342.7610016148.

The spelling of 40269312 in words is "forty million, two hundred sixty-nine thousand, three hundred twelve".