20628374 has 8 divisors (see below), whose sum is σ = 33322800. Its totient is φ = 9520776.

The previous prime is 20628373. The next prime is 20628379. The reversal of 20628374 is 47382602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×20628374³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20628374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20628373) 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, 396674 + ... + 396725.

It is an arithmetic number, because the mean of its divisors is an integer number (4165350).

Almost surely, 2^20628374 is an apocalyptic number.

20628374 is a deficient number, since it is larger than the sum of its proper divisors (12694426).

20628374 is a wasteful number, since it uses less digits than its factorization.

20628374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793414.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20628374 is about 4541.8469811300. The cubic root of 20628374 is about 274.2552809374.

The spelling of 20628374 in words is "twenty million, six hundred twenty-eight thousand, three hundred seventy-four".