21349130 has 16 divisors (see below), whose sum is σ = 41922144. Its totient is φ = 7763280.

The previous prime is 21349117. The next prime is 21349183. The reversal of 21349130 is 3194312.

It is a junction number, because it is equal to n+sod(n) for n = 21349096 and 21349105.

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, 96932 + ... + 97151.

It is an arithmetic number, because the mean of its divisors is an integer number (2620134).

Almost surely, 2^21349130 is an apocalyptic number.

21349130 is a deficient number, since it is larger than the sum of its proper divisors (20573014).

21349130 is a wasteful number, since it uses less digits than its factorization.

21349130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194101.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 21349130 is about 4620.5118764050. The cubic root of 21349130 is about 277.4129478318.

The spelling of 21349130 in words is "twenty-one million, three hundred forty-nine thousand, one hundred thirty".