40423552 has 64 divisors (see below), whose sum is σ = 91891800. Its totient is φ = 17547264.

The previous prime is 40423549. The next prime is 40423553. The reversal of 40423552 is 25532404.

It can be written as a sum of positive squares in 4 ways, for example, as 23580736 + 16842816 = 4856^2 + 4104^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (40423553) 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, 27574 + ... + 29002.

Almost surely, 2^40423552 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 40423552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45945900).

40423552 is an abundant number, since it is smaller than the sum of its proper divisors (51468248).

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

40423552 is a wasteful number, since it uses less digits than its factorization.

40423552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 40423552 is about 6357.9518714756. The cubic root of 40423552 is about 343.1980598416.

Adding to 40423552 its reverse (25532404), we get a palindrome (65955956).

The spelling of 40423552 in words is "forty million, four hundred twenty-three thousand, five hundred fifty-two".