21466030 has 16 divisors (see below), whose sum is σ = 39538224. Its totient is φ = 8386560.

The previous prime is 21466021. The next prime is 21466037. The reversal of 21466030 is 3066412.

It is a super-3 number, since 3×21466030³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21465992 and 21466010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21466037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24531 + ... + 25390.

It is an arithmetic number, because the mean of its divisors is an integer number (2471139).

Almost surely, 2^21466030 is an apocalyptic number.

21466030 is a deficient number, since it is larger than the sum of its proper divisors (18072194).

21466030 is a wasteful number, since it uses less digits than its factorization.

21466030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49971.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 21466030 is about 4633.1447203816. The cubic root of 21466030 is about 277.9183636214.

The spelling of 21466030 in words is "twenty-one million, four hundred sixty-six thousand, thirty".