21470427430 has 8 divisors (see below), whose sum is σ = 38646769392. Its totient is φ = 8588170968.

The previous prime is 21470427403. The next prime is 21470427439. The reversal of 21470427430 is 3472407412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21470427439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073521362 + ... + 1073521381.

It is an arithmetic number, because the mean of its divisors is an integer number (4830846174).

Almost surely, 2^21470427430 is an apocalyptic number.

21470427430 is a deficient number, since it is larger than the sum of its proper divisors (17176341962).

21470427430 is a wasteful number, since it uses less digits than its factorization.

21470427430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147042750.

The product of its (nonzero) digits is 37632, while the sum is 34.

It can be divided in two parts, 21470 and 427430, that added together give a square (448900 = 670²).

The spelling of 21470427430 in words is "twenty-one billion, four hundred seventy million, four hundred twenty-seven thousand, four hundred thirty".