21446130 has 32 divisors (see below), whose sum is σ = 52128000. Its totient is φ = 5645952.

The previous prime is 21446123. The next prime is 21446149. The reversal of 21446130 is 3164412.

It is a junction number, because it is equal to n+sod(n) for n = 21446097 and 21446106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2155 + ... + 6894.

It is an arithmetic number, because the mean of its divisors is an integer number (1629000).

Almost surely, 2^21446130 is an apocalyptic number.

21446130 is an abundant number, since it is smaller than the sum of its proper divisors (30681870).

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

21446130 is a wasteful number, since it uses less digits than its factorization.

21446130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 21446130 is about 4630.9966529895. The cubic root of 21446130 is about 277.8324560215.

The spelling of 21446130 in words is "twenty-one million, four hundred forty-six thousand, one hundred thirty".