21429302 has 8 divisors (see below), whose sum is σ = 33835800. Its totient is φ = 10150704.

The previous prime is 21429293. The next prime is 21429311. The reversal of 21429302 is 20392412.

It is an interprime number because it is at equal distance from previous prime (21429293) and next prime (21429311).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281927 + ... + 282002.

It is an arithmetic number, because the mean of its divisors is an integer number (4229475).

Almost surely, 2^21429302 is an apocalyptic number.

21429302 is a deficient number, since it is larger than the sum of its proper divisors (12406498).

21429302 is a wasteful number, since it uses less digits than its factorization.

21429302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563950.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 21429302 is about 4629.1794089234. The cubic root of 21429302 is about 277.7597686576.

The spelling of 21429302 in words is "twenty-one million, four hundred twenty-nine thousand, three hundred two".