32420040 has 32 divisors (see below), whose sum is σ = 97260480. Its totient is φ = 8645312.

The previous prime is 32420033. The next prime is 32420051. The reversal of 32420040 is 4002423.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134964 + ... + 135203.

It is an arithmetic number, because the mean of its divisors is an integer number (3039390).

Almost surely, 2^32420040 is an apocalyptic number.

32420040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32420040 is an abundant number, since it is smaller than the sum of its proper divisors (64840440).

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

32420040 is a wasteful number, since it uses less digits than its factorization.

32420040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270181 (or 270177 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 32420040 is about 5693.8598507515. The cubic root of 32420040 is about 318.8632846086.

Adding to 32420040 its reverse (4002423), we get a palindrome (36422463).

The spelling of 32420040 in words is "thirty-two million, four hundred twenty thousand, forty".