40404132 has 36 divisors (see below), whose sum is σ = 102578476. Its totient is φ = 13409280.

The previous prime is 40404101. The next prime is 40404139. The reversal of 40404132 is 23140404.

It can be written as a sum of positive squares in 2 ways, for example, as 16842816 + 23561316 = 4104^2 + 4854^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40404139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6348 + ... + 11004.

Almost surely, 2^40404132 is an apocalyptic number.

It is an amenable number.

40404132 is an abundant number, since it is smaller than the sum of its proper divisors (62174344).

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

40404132 is a wasteful number, since it uses less digits than its factorization.

40404132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908 (or 4903 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40404132 is about 6356.4244666322. The cubic root of 40404132 is about 343.1430921015.

Adding to 40404132 its reverse (23140404), we get a palindrome (63544536).

The spelling of 40404132 in words is "forty million, four hundred four thousand, one hundred thirty-two".