21293702 has 4 divisors (see below), whose sum is σ = 31940556. Its totient is φ = 10646850.

The previous prime is 21293693. The next prime is 21293711. The reversal of 21293702 is 20739212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21293693) and next prime (21293711).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5323424 + ... + 5323427.

It is an arithmetic number, because the mean of its divisors is an integer number (7985139).

Almost surely, 2^21293702 is an apocalyptic number.

21293702 is a deficient number, since it is larger than the sum of its proper divisors (10646854).

21293702 is a wasteful number, since it uses less digits than its factorization.

21293702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10646853.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 21293702 is about 4614.5099414781. The cubic root of 21293702 is about 277.1726605818.

The spelling of 21293702 in words is "twenty-one million, two hundred ninety-three thousand, seven hundred two".