32006428 has 6 divisors (see below), whose sum is σ = 56011256. Its totient is φ = 16003212.

The previous prime is 32006419. The next prime is 32006479. The reversal of 32006428 is 82460023.

It is a happy number.

It is a super-2 number, since 2×32006428² = 2048822866638368, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 4000800 + ... + 4000807.

Almost surely, 2^32006428 is an apocalyptic number.

It is an amenable number.

32006428 is a deficient number, since it is larger than the sum of its proper divisors (24004828).

32006428 is a wasteful number, since it uses less digits than its factorization.

32006428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8001611 (or 8001609 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 32006428 is about 5657.4223812616. The cubic root of 32006428 is about 317.5014669162.

The spelling of 32006428 in words is "thirty-two million, six thousand, four hundred twenty-eight".