20288498 has 4 divisors (see below), whose sum is σ = 30432750. Its totient is φ = 10144248.

The previous prime is 20288491. The next prime is 20288509. The reversal of 20288498 is 89488202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89488202 = 2 ⋅44744101.

It can be written as a sum of positive squares in only one way, i.e., 14845609 + 5442889 = 3853^2 + 2333^2 .

It is not an unprimeable number, because it can be changed into a prime (20288491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5072123 + ... + 5072126.

Almost surely, 2^20288498 is an apocalyptic number.

20288498 is a deficient number, since it is larger than the sum of its proper divisors (10144252).

20288498 is a wasteful number, since it uses less digits than its factorization.

20288498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10144251.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 20288498 is about 4504.2755244323. The cubic root of 20288498 is about 272.7407092303.

The spelling of 20288498 in words is "twenty million, two hundred eighty-eight thousand, four hundred ninety-eight".