21014160 has 40 divisors (see below), whose sum is σ = 65144640. Its totient is φ = 5603712.

The previous prime is 21014131. The next prime is 21014167. The reversal of 21014160 is 6141012.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014167) 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, 43540 + ... + 44019.

It is an arithmetic number, because the mean of its divisors is an integer number (1628616).

Almost surely, 2^21014160 is an apocalyptic number.

21014160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21014160 is an abundant number, since it is smaller than the sum of its proper divisors (44130480).

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

21014160 is a wasteful number, since it uses less digits than its factorization.

21014160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87575 (or 87569 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 21014160 is about 4584.1204172665. The cubic root of 21014160 is about 275.9544138111.

Adding to 21014160 its reverse (6141012), we get a palindrome (27155172).

The spelling of 21014160 in words is "twenty-one million, fourteen thousand, one hundred sixty".