21426098 has 16 divisors (see below), whose sum is σ = 33016896. Its totient is φ = 10423920.

The previous prime is 21426059. The next prime is 21426101. The reversal of 21426098 is 89062412.

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, 13115 + ... + 14657.

It is an arithmetic number, because the mean of its divisors is an integer number (2063556).

Almost surely, 2^21426098 is an apocalyptic number.

21426098 is a deficient number, since it is larger than the sum of its proper divisors (11590798).

21426098 is a wasteful number, since it uses less digits than its factorization.

21426098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 21426098 is about 4628.8333303328. The cubic root of 21426098 is about 277.7459248927.

The spelling of 21426098 in words is "twenty-one million, four hundred twenty-six thousand, ninety-eight".