21074360 has 16 divisors (see below), whose sum is σ = 47417400. Its totient is φ = 8429728.

The previous prime is 21074359. The next prime is 21074393. The reversal of 21074360 is 6347012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263390 + ... + 263469.

Almost surely, 2^21074360 is an apocalyptic number.

21074360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21074360 is an abundant number, since it is smaller than the sum of its proper divisors (26343040).

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

21074360 is a wasteful number, since it uses less digits than its factorization.

21074360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526870 (or 526866 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 21074360 is about 4590.6818665641. The cubic root of 21074360 is about 276.2176746708.

The spelling of 21074360 in words is "twenty-one million, seventy-four thousand, three hundred sixty".