21274010 has 8 divisors (see below), whose sum is σ = 38293236. Its totient is φ = 8509600.

The previous prime is 21274009. The next prime is 21274027. The reversal of 21274010 is 1047212.

It can be written as a sum of positive squares in 2 ways, for example, as 20079361 + 1194649 = 4481^2 + 1093^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21274010.

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, 1063691 + ... + 1063710.

Almost surely, 2^21274010 is an apocalyptic number.

21274010 is a deficient number, since it is larger than the sum of its proper divisors (17019226).

21274010 is a wasteful number, since it uses less digits than its factorization.

21274010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127408.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 21274010 is about 4612.3757435838. The cubic root of 21274010 is about 277.0871929413.

The spelling of 21274010 in words is "twenty-one million, two hundred seventy-four thousand, ten".