21232296 has 24 divisors (see below), whose sum is σ = 57504330. Its totient is φ = 7077408.

The previous prime is 21232259. The next prime is 21232307. The reversal of 21232296 is 69223212.

It can be written as a sum of positive squares in only one way, i.e., 16695396 + 4536900 = 4086^2 + 2130^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147375 + ... + 147518.

Almost surely, 2^21232296 is an apocalyptic number.

It is an amenable number.

21232296 is an abundant number, since it is smaller than the sum of its proper divisors (36272034).

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

21232296 is a wasteful number, since it uses less digits than its factorization.

21232296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294905 (or 294898 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 21232296 is about 4607.8515601091. The cubic root of 21232296 is about 276.9059705957.

It can be divided in two parts, 21232 and 296, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 21232296 in words is "twenty-one million, two hundred thirty-two thousand, two hundred ninety-six".