40212396 has 96 divisors (see below), whose sum is σ = 122017280. Its totient is φ = 11212992.

The previous prime is 40212383. The next prime is 40212397. The reversal of 40212396 is 69321204.

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

It is not an unprimeable number, because it can be changed into a prime (40212397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31890 + ... + 33126.

Almost surely, 2^40212396 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 40212396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61008640).

40212396 is an abundant number, since it is smaller than the sum of its proper divisors (81804884).

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

40212396 is a wasteful number, since it uses less digits than its factorization.

40212396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1292 counting only the distinct ones).

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

The square root of 40212396 is about 6341.3244673333. The cubic root of 40212396 is about 342.5994411737.

The spelling of 40212396 in words is "forty million, two hundred twelve thousand, three hundred ninety-six".