21100348 has 12 divisors (see below), whose sum is σ = 37446192. Its totient is φ = 10401440.

The previous prime is 21100319. The next prime is 21100351. The reversal of 21100348 is 84300112.

It is a super-2 number, since 2×21100348² = 890449371442208, which contains 22 as substring.

It is a congruent number.

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, 36865 + ... + 37432.

It is an arithmetic number, because the mean of its divisors is an integer number (3120516).

Almost surely, 2^21100348 is an apocalyptic number.

It is an amenable number.

21100348 is a deficient number, since it is larger than the sum of its proper divisors (16345844).

21100348 is a wasteful number, since it uses less digits than its factorization.

21100348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74372 (or 74370 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 21100348 is about 4593.5115108161. The cubic root of 21100348 is about 276.3311679754.

The spelling of 21100348 in words is "twenty-one million, one hundred thousand, three hundred forty-eight".