20545352 has 8 divisors (see below), whose sum is σ = 38522550. Its totient is φ = 10272672.

The previous prime is 20545331. The next prime is 20545363. The reversal of 20545352 is 25354502.

It can be written as a sum of positive squares in only one way, i.e., 17355556 + 3189796 = 4166^2 + 1786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20545352² = 844222977607808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284077 + ... + 1284092.

Almost surely, 2^20545352 is an apocalyptic number.

It is an amenable number.

20545352 is a deficient number, since it is larger than the sum of its proper divisors (17977198).

20545352 is a wasteful number, since it uses less digits than its factorization.

20545352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568175 (or 2568171 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 20545352 is about 4532.6980927479. The cubic root of 20545352 is about 273.8868590012.

Adding to 20545352 its reverse (25354502), we get a palindrome (45899854).

The spelling of 20545352 in words is "twenty million, five hundred forty-five thousand, three hundred fifty-two".