21080098 has 16 divisors (see below), whose sum is σ = 35534016. Its totient is φ = 9306000.

The previous prime is 21080089. The next prime is 21080107. The reversal of 21080098 is 89008012.

It is an interprime number because it is at equal distance from previous prime (21080089) and next prime (21080107).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17028 + ... + 18223.

It is an arithmetic number, because the mean of its divisors is an integer number (2220876).

Almost surely, 2^21080098 is an apocalyptic number.

21080098 is a deficient number, since it is larger than the sum of its proper divisors (14453918).

21080098 is a wasteful number, since it uses less digits than its factorization.

21080098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35289.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 21080098 is about 4591.3067856548. The cubic root of 21080098 is about 276.2427413584.

It can be divided in two parts, 210 and 80098, that added together give a palindrome (80308).

The spelling of 21080098 in words is "twenty-one million, eighty thousand, ninety-eight".