21201348 has 48 divisors (see below), whose sum is σ = 56770560. Its totient is φ = 6032544.

The previous prime is 21201347. The next prime is 21201373. The reversal of 21201348 is 84310212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21201347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31843 + ... + 32501.

It is an arithmetic number, because the mean of its divisors is an integer number (1182720).

Almost surely, 2^21201348 is an apocalyptic number.

21201348 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21201348 is an abundant number, since it is smaller than the sum of its proper divisors (35569212).

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

21201348 is a wasteful number, since it uses less digits than its factorization.

21201348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 21201348 is about 4604.4921544075. The cubic root of 21201348 is about 276.7713666407.

The spelling of 21201348 in words is "twenty-one million, two hundred one thousand, three hundred forty-eight".