21734950 has 12 divisors (see below), whose sum is σ = 40427100. Its totient is φ = 8693960.

The previous prime is 21734941. The next prime is 21734953. The reversal of 21734950 is 5943712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21734953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217300 + ... + 217399.

It is an arithmetic number, because the mean of its divisors is an integer number (3368925).

Almost surely, 2^21734950 is an apocalyptic number.

21734950 is a deficient number, since it is larger than the sum of its proper divisors (18692150).

21734950 is a wasteful number, since it uses less digits than its factorization.

21734950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434711 (or 434706 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 21734950 is about 4662.0757179608. The cubic root of 21734950 is about 279.0741100557.

The spelling of 21734950 in words is "twenty-one million, seven hundred thirty-four thousand, nine hundred fifty".