21448802 has 8 divisors (see below), whose sum is σ = 32468700. Its totient is φ = 10625904.

The previous prime is 21448799. The next prime is 21448829. The reversal of 21448802 is 20884412.

It can be written as a sum of positive squares in 2 ways, for example, as 20241001 + 1207801 = 4499^2 + 1099^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21448802² = 920102214470408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48977 + ... + 49412.

Almost surely, 2^21448802 is an apocalyptic number.

21448802 is a deficient number, since it is larger than the sum of its proper divisors (11019898).

21448802 is a wasteful number, since it uses less digits than its factorization.

21448802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98500.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 21448802 is about 4631.2851348195. The cubic root of 21448802 is about 277.8439940394.

The spelling of 21448802 in words is "twenty-one million, four hundred forty-eight thousand, eight hundred two".