40102432 has 48 divisors (see below), whose sum is σ = 83341440. Its totient is φ = 18993216.

The previous prime is 40102427. The next prime is 40102441. The reversal of 40102432 is 23420104.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389293 + ... + 389395.

It is an arithmetic number, because the mean of its divisors is an integer number (1736280).

Almost surely, 2^40102432 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 40102432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41670720).

40102432 is an abundant number, since it is smaller than the sum of its proper divisors (43239008).

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

40102432 is an equidigital number, since it uses as much as digits as its factorization.

40102432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40102432 is about 6332.6481032819. The cubic root of 40102432 is about 342.2868675939.

Adding to 40102432 its reverse (23420104), we get a palindrome (63522536).

The spelling of 40102432 in words is "forty million, one hundred two thousand, four hundred thirty-two".