40023552 has 80 divisors (see below), whose sum is σ = 108421632. Its totient is φ = 13117440.

The previous prime is 40023551. The next prime is 40023569. The reversal of 40023552 is 25532004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40023551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108873 + ... + 109239.

Almost surely, 2^40023552 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 40023552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54210816).

40023552 is an abundant number, since it is smaller than the sum of its proper divisors (68398080).

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

40023552 is an equidigital number, since it uses as much as digits as its factorization.

40023552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40023552 is about 6326.4169954248. The cubic root of 40023552 is about 342.0622984216.

Adding to 40023552 its reverse (25532004), we get a palindrome (65555556).

The spelling of 40023552 in words is "forty million, twenty-three thousand, five hundred fifty-two".