20352428 has 12 divisors (see below), whose sum is σ = 35718480. Its totient is φ = 10147152.

The previous prime is 20352421. The next prime is 20352433. The reversal of 20352428 is 82425302.

It is a junction number, because it is equal to n+sod(n) for n = 20352397 and 20352406.

It is not an unprimeable number, because it can be changed into a prime (20352421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5651 + ... + 8522.

It is an arithmetic number, because the mean of its divisors is an integer number (2976540).

Almost surely, 2^20352428 is an apocalyptic number.

It is an amenable number.

20352428 is a deficient number, since it is larger than the sum of its proper divisors (15366052).

20352428 is a wasteful number, since it uses less digits than its factorization.

20352428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14536 (or 14534 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20352428 is about 4511.3665335461. The cubic root of 20352428 is about 273.0268817424.

The spelling of 20352428 in words is "twenty million, three hundred fifty-two thousand, four hundred twenty-eight".