21937010 has 8 divisors (see below), whose sum is σ = 39486636. Its totient is φ = 8774800.

The previous prime is 21936989. The next prime is 21937031. The reversal of 21937010 is 1073912.

It is an interprime number because it is at equal distance from previous prime (21936989) and next prime (21937031).

It can be written as a sum of positive squares in 2 ways, for example, as 20857489 + 1079521 = 4567^2 + 1039^2 .

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

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, 1096841 + ... + 1096860.

Almost surely, 2^21937010 is an apocalyptic number.

21937010 is a deficient number, since it is larger than the sum of its proper divisors (17549626).

21937010 is a wasteful number, since it uses less digits than its factorization.

21937010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193708.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 21937010 is about 4683.6961899765. The cubic root of 21937010 is about 279.9362524945.

The spelling of 21937010 in words is "twenty-one million, nine hundred thirty-seven thousand, ten".