21346700 has 18 divisors (see below), whose sum is σ = 46322556. Its totient is φ = 8538640.

The previous prime is 21346681. The next prime is 21346711. The reversal of 21346700 is 764312.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106634 + ... + 106833.

Almost surely, 2^21346700 is an apocalyptic number.

21346700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21346700 is an abundant number, since it is smaller than the sum of its proper divisors (24975856).

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

21346700 is a wasteful number, since it uses less digits than its factorization.

21346700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213481 (or 213474 counting only the distinct ones).

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

The square root of 21346700 is about 4620.2489110436. The cubic root of 21346700 is about 277.4024222031.

The spelling of 21346700 in words is "twenty-one million, three hundred forty-six thousand, seven hundred".