21301874 has 8 divisors (see below), whose sum is σ = 34857648. Its totient is φ = 9682660.

The previous prime is 21301873. The next prime is 21301877. The reversal of 21301874 is 47810312.

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

It is not an unprimeable number, because it can be changed into a prime (21301873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484112 + ... + 484155.

It is an arithmetic number, because the mean of its divisors is an integer number (4357206).

Almost surely, 2^21301874 is an apocalyptic number.

21301874 is a deficient number, since it is larger than the sum of its proper divisors (13555774).

21301874 is a wasteful number, since it uses less digits than its factorization.

21301874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968280.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 21301874 is about 4615.3953243466. The cubic root of 21301874 is about 277.2081134008.

It can be divided in two parts, 2130 and 1874, that added together give a palindrome (4004).

The spelling of 21301874 in words is "twenty-one million, three hundred one thousand, eight hundred seventy-four".