221460030 has 48 divisors (see below), whose sum is σ = 628143984. Its totient is φ = 53687040.

The previous prime is 221460017. The next prime is 221460049. The reversal of 221460030 is 30064122.

It is a happy number.

221460030 is a `hidden beast` number, since 22 + 14 + 600 + 30 = 666.

It is a super-3 number, since 3×221460030³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221459985 and 221460012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110859 + ... + 112838.

It is an arithmetic number, because the mean of its divisors is an integer number (13086333).

Almost surely, 2^221460030 is an apocalyptic number.

221460030 is an abundant number, since it is smaller than the sum of its proper divisors (406683954).

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

221460030 is a wasteful number, since it uses less digits than its factorization.

221460030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223721 (or 223718 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 221460030 is about 14881.5331871417. The cubic root of 221460030 is about 605.0135734495.

The spelling of 221460030 in words is "two hundred twenty-one million, four hundred sixty thousand, thirty".