21029702 has 8 divisors (see below), whose sum is σ = 31582056. Its totient is φ = 10502352.

The previous prime is 21029683. The next prime is 21029717. The reversal of 21029702 is 20792012.

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, 3983 + ... + 7610.

It is an arithmetic number, because the mean of its divisors is an integer number (3947757).

Almost surely, 2^21029702 is an apocalyptic number.

21029702 is a deficient number, since it is larger than the sum of its proper divisors (10552354).

21029702 is a wasteful number, since it uses less digits than its factorization.

21029702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12502.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 21029702 is about 4585.8153037383. The cubic root of 21029702 is about 276.0224286891.

The spelling of 21029702 in words is "twenty-one million, twenty-nine thousand, seven hundred two".