40808152 has 64 divisors (see below), whose sum is σ = 98519040. Its totient is φ = 15379200.

The previous prime is 40808149. The next prime is 40808153. The reversal of 40808152 is 25180804.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 40808152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40808153) 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, 18028 + ... + 20164.

It is an arithmetic number, because the mean of its divisors is an integer number (1539360).

Almost surely, 2^40808152 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 40808152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49259520).

40808152 is an abundant number, since it is smaller than the sum of its proper divisors (57710888).

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

40808152 is a wasteful number, since it uses less digits than its factorization.

40808152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 40808152 is about 6388.1258597495. The cubic root of 40808152 is about 344.2830507927.

Adding to 40808152 its reverse (25180804), we get a palindrome (65988956).

The spelling of 40808152 in words is "forty million, eight hundred eight thousand, one hundred fifty-two".