21059674 has 16 divisors (see below), whose sum is σ = 33126912. Its totient is φ = 10021968.

The previous prime is 21059671. The next prime is 21059677. The reversal of 21059674 is 47695012.

It is an interprime number because it is at equal distance from previous prime (21059671) and next prime (21059677).

It is not an unprimeable number, because it can be changed into a prime (21059671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9232 + ... + 11284.

It is an arithmetic number, because the mean of its divisors is an integer number (2070432).

Almost surely, 2^21059674 is an apocalyptic number.

21059674 is a deficient number, since it is larger than the sum of its proper divisors (12067238).

21059674 is a wasteful number, since it uses less digits than its factorization.

21059674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 21059674 is about 4589.0820432849. The cubic root of 21059674 is about 276.1534975472.

The spelling of 21059674 in words is "twenty-one million, fifty-nine thousand, six hundred seventy-four".