21078114 has 8 divisors (see below), whose sum is σ = 42156240. Its totient is φ = 7026036.

The previous prime is 21078103. The next prime is 21078119. The reversal of 21078114 is 41187012.

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

21078114 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21078119) 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, 1756504 + ... + 1756515.

It is an arithmetic number, because the mean of its divisors is an integer number (5269530).

Almost surely, 2^21078114 is an apocalyptic number.

21078114 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21078114 is a wasteful number, since it uses less digits than its factorization.

21078114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513024.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 21078114 is about 4591.0907200795. The cubic root of 21078114 is about 276.2340746878.

The spelling of 21078114 in words is "twenty-one million, seventy-eight thousand, one hundred fourteen".