20975332 has 36 divisors (see below), whose sum is σ = 43155840. Its totient is φ = 8893584.

The previous prime is 20975291. The next prime is 20975341. The reversal of 20975332 is 23357902.

20975332 = T₂₀₃ + T₂₀₄ + ... + T₅₁₁.

It is a junction number, because it is equal to n+sod(n) for n = 20975294 and 20975303.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19669 + ... + 20707.

Almost surely, 2^20975332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20975332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21577920).

20975332 is an abundant number, since it is smaller than the sum of its proper divisors (22180508).

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

20975332 is a wasteful number, since it uses less digits than its factorization.

20975332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 20975332 is about 4579.8834046294. The cubic root of 20975332 is about 275.7843481030.

The spelling of 20975332 in words is "twenty million, nine hundred seventy-five thousand, three hundred thirty-two".