21097348 has 24 divisors (see below), whose sum is σ = 39428928. Its totient is φ = 9853536.

The previous prime is 21097337. The next prime is 21097369. The reversal of 21097348 is 84379012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290 + ... + 6622.

It is an arithmetic number, because the mean of its divisors is an integer number (1642872).

Almost surely, 2^21097348 is an apocalyptic number.

It is an amenable number.

21097348 is a deficient number, since it is larger than the sum of its proper divisors (18331580).

21097348 is a wasteful number, since it uses less digits than its factorization.

21097348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5403 (or 5401 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 21097348 is about 4593.1849516430. The cubic root of 21097348 is about 276.3180713068.

The spelling of 21097348 in words is "twenty-one million, ninety-seven thousand, three hundred forty-eight".