20523652 has 6 divisors (see below), whose sum is σ = 35916398. Its totient is φ = 10261824.

The previous prime is 20523649. The next prime is 20523653. The reversal of 20523652 is 25632502.

It can be written as a sum of positive squares in only one way, i.e., 20376196 + 147456 = 4514^2 + 384^2 .

It is not an unprimeable number, because it can be changed into a prime (20523653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565453 + ... + 2565460.

Almost surely, 2^20523652 is an apocalyptic number.

It is an amenable number.

20523652 is a deficient number, since it is larger than the sum of its proper divisors (15392746).

20523652 is a wasteful number, since it uses less digits than its factorization.

20523652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130917 (or 5130915 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20523652 is about 4530.3037425762. The cubic root of 20523652 is about 273.7903986027.

The spelling of 20523652 in words is "twenty million, five hundred twenty-three thousand, six hundred fifty-two".