21014770 has 32 divisors (see below), whose sum is σ = 43763328. Its totient is φ = 7116288.

The previous prime is 21014761. The next prime is 21014803. The reversal of 21014770 is 7741012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4002 + ... + 7618.

It is an arithmetic number, because the mean of its divisors is an integer number (1367604).

Almost surely, 2^21014770 is an apocalyptic number.

21014770 is an abundant number, since it is smaller than the sum of its proper divisors (22748558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21014770 is a wasteful number, since it uses less digits than its factorization.

21014770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 21014770 is about 4584.1869508125. The cubic root of 21014770 is about 275.9570839244.

Adding to 21014770 its reverse (7741012), we get a palindrome (28755782).

The spelling of 21014770 in words is "twenty-one million, fourteen thousand, seven hundred seventy".