20072576 has 16 divisors (see below), whose sum is σ = 39988590. Its totient is φ = 10036224.

The previous prime is 20072561. The next prime is 20072617. The reversal of 20072576 is 67527002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10086976 + 9985600 = 3176^2 + 3160^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 78281 + ... + 78536.

Almost surely, 2^20072576 is an apocalyptic number.

It is an amenable number.

20072576 is a deficient number, since it is larger than the sum of its proper divisors (19916014).

20072576 is an equidigital number, since it uses as much as digits as its factorization.

20072576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156831 (or 156819 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20072576 is about 4480.2428505607. The cubic root of 20072576 is about 271.7697012580.

Adding to 20072576 its reverse (67527002), we get a palindrome (87599578).

The spelling of 20072576 in words is "twenty million, seventy-two thousand, five hundred seventy-six".