20628392 has 32 divisors (see below), whose sum is σ = 40212480. Its totient is φ = 9910080.

The previous prime is 20628379. The next prime is 20628397. The reversal of 20628392 is 29382602.

It is a super-3 number, since 3×20628392³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20628397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55118 + ... + 55490.

It is an arithmetic number, because the mean of its divisors is an integer number (1256640).

Almost surely, 2^20628392 is an apocalyptic number.

It is an amenable number.

20628392 is a deficient number, since it is larger than the sum of its proper divisors (19584088).

20628392 is a wasteful number, since it uses less digits than its factorization.

20628392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 20628392 is about 4541.8489627023. The cubic root of 20628392 is about 274.2553607077.

The spelling of 20628392 in words is "twenty million, six hundred twenty-eight thousand, three hundred ninety-two".