21370596 has 24 divisors (see below), whose sum is σ = 53700864. Its totient is φ = 6575520.

The previous prime is 21370579. The next prime is 21370597. The reversal of 21370596 is 69507312.

It is not an unprimeable number, because it can be changed into a prime (21370597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68340 + ... + 68651.

It is an arithmetic number, because the mean of its divisors is an integer number (2237536).

Almost surely, 2^21370596 is an apocalyptic number.

21370596 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21370596 is an abundant number, since it is smaller than the sum of its proper divisors (32330268).

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

21370596 is a wasteful number, since it uses less digits than its factorization.

21370596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137011 (or 137009 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 21370596 is about 4622.8341955991. The cubic root of 21370596 is about 277.5058938769.

The spelling of 21370596 in words is "twenty-one million, three hundred seventy thousand, five hundred ninety-six".