20928498 has 16 divisors (see below), whose sum is σ = 41959296. Its totient is φ = 6959120.

The previous prime is 20928473. The next prime is 20928499. The reversal of 20928498 is 89482902.

It is not an unprimeable number, because it can be changed into a prime (20928499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1461 + ... + 6632.

It is an arithmetic number, because the mean of its divisors is an integer number (2622456).

Almost surely, 2^20928498 is an apocalyptic number.

20928498 is an abundant number, since it is smaller than the sum of its proper divisors (21030798).

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

20928498 is a wasteful number, since it uses less digits than its factorization.

20928498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8529.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 20928498 is about 4574.7675350776. The cubic root of 20928498 is about 275.5789368264.

The spelling of 20928498 in words is "twenty million, nine hundred twenty-eight thousand, four hundred ninety-eight".