21074030 has 8 divisors (see below), whose sum is σ = 37933272. Its totient is φ = 8429608.

The previous prime is 21074023. The next prime is 21074051. The reversal of 21074030 is 3047012.

It is a happy number.

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

It is a super-2 number, since 2×21074030² = 888229480881800, which contains 22 as substring.

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, 1053692 + ... + 1053711.

It is an arithmetic number, because the mean of its divisors is an integer number (4741659).

Almost surely, 2^21074030 is an apocalyptic number.

21074030 is a deficient number, since it is larger than the sum of its proper divisors (16859242).

21074030 is a wasteful number, since it uses less digits than its factorization.

21074030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107410.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 21074030 is about 4590.6459240503. The cubic root of 21074030 is about 276.2162329140.

The spelling of 21074030 in words is "twenty-one million, seventy-four thousand, thirty".