224651421 has 32 divisors (see below), whose sum is σ = 352304000. Its totient is φ = 141087744.

The previous prime is 224651417. The next prime is 224651461. The reversal of 224651421 is 124156422.

224651421 is a `hidden beast` number, since 2 + 2 + 4 + 651 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 224651421 - 2² = 224651417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224651411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97875 + ... + 100143.

It is an arithmetic number, because the mean of its divisors is an integer number (11009500).

Almost surely, 2^224651421 is an apocalyptic number.

It is an amenable number.

224651421 is a deficient number, since it is larger than the sum of its proper divisors (127652579).

224651421 is a wasteful number, since it uses less digits than its factorization.

224651421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490 (or 2484 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 224651421 is about 14988.3761962395. The cubic root of 224651421 is about 607.9059441951.

The spelling of 224651421 in words is "two hundred twenty-four million, six hundred fifty-one thousand, four hundred twenty-one".