21152298 has 16 divisors (see below), whose sum is σ = 42400800. Its totient is φ = 7034736.

The previous prime is 21152291. The next prime is 21152309. The reversal of 21152298 is 89225112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21152291) 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, 973 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (2650050).

Almost surely, 2^21152298 is an apocalyptic number.

21152298 is an abundant number, since it is smaller than the sum of its proper divisors (21248502).

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

21152298 is a wasteful number, since it uses less digits than its factorization.

21152298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8021.

The product of its digits is 2880, while the sum is 30.

The square root of 21152298 is about 4599.1627498926. The cubic root of 21152298 is about 276.5577620115.

The spelling of 21152298 in words is "twenty-one million, one hundred fifty-two thousand, two hundred ninety-eight".