20976450 has 48 divisors (see below), whose sum is σ = 56755296. Its totient is φ = 5084800.

The previous prime is 20976433. The next prime is 20976457. The reversal of 20976450 is 5467902.

It is a super-3 number, since 3×20976450³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20976457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4707 + ... + 8006.

It is an arithmetic number, because the mean of its divisors is an integer number (1182402).

Almost surely, 2^20976450 is an apocalyptic number.

20976450 is an abundant number, since it is smaller than the sum of its proper divisors (35778846).

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

20976450 is a wasteful number, since it uses less digits than its factorization.

20976450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12739 (or 12734 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 20976450 is about 4580.0054585120. The cubic root of 20976450 is about 275.7892478494.

The spelling of 20976450 in words is "twenty million, nine hundred seventy-six thousand, four hundred fifty".