40709152 has 48 divisors (see below), whose sum is σ = 92588832. Its totient is φ = 17413120.

The previous prime is 40709099. The next prime is 40709171. The reversal of 40709152 is 25190704.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40709152.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2583 + ... + 9385.

It is an arithmetic number, because the mean of its divisors is an integer number (1928934).

Almost surely, 2^40709152 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 40709152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46294416).

40709152 is an abundant number, since it is smaller than the sum of its proper divisors (51879680).

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

40709152 is a wasteful number, since it uses less digits than its factorization.

40709152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841 (or 6833 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 40709152 is about 6380.3724029245. The cubic root of 40709152 is about 344.0044167452.

Adding to 40709152 its reverse (25190704), we get a palindrome (65899856).

The spelling of 40709152 in words is "forty million, seven hundred nine thousand, one hundred fifty-two".