21467030 has 32 divisors (see below), whose sum is σ = 42747264. Its totient is φ = 7710336.

The previous prime is 21467029. The next prime is 21467071. The reversal of 21467030 is 3076412.

It is a junction number, because it is equal to n+sod(n) for n = 21466987 and 21467005.

It is a congruent number.

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, 2579 + ... + 7041.

It is an arithmetic number, because the mean of its divisors is an integer number (1335852).

Almost surely, 2^21467030 is an apocalyptic number.

21467030 is a deficient number, since it is larger than the sum of its proper divisors (21280234).

21467030 is a wasteful number, since it uses less digits than its factorization.

21467030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 21467030 is about 4633.2526371870. The cubic root of 21467030 is about 277.9226791849.

The spelling of 21467030 in words is "twenty-one million, four hundred sixty-seven thousand, thirty".