20355452 has 12 divisors (see below), whose sum is σ = 38362296. Its totient is φ = 9394800.

The previous prime is 20355431. The next prime is 20355473. The reversal of 20355452 is 25455302.

It is an interprime number because it is at equal distance from previous prime (20355431) and next prime (20355473).

It is a super-2 number, since 2×20355452² = 828688852248608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195674 + ... + 195777.

It is an arithmetic number, because the mean of its divisors is an integer number (3196858).

Almost surely, 2^20355452 is an apocalyptic number.

It is an amenable number.

20355452 is a deficient number, since it is larger than the sum of its proper divisors (18006844).

20355452 is a wasteful number, since it uses less digits than its factorization.

20355452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391468 (or 391466 counting only the distinct ones).

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

The square root of 20355452 is about 4511.7016745348. The cubic root of 20355452 is about 273.0404033462.

It can be divided in two parts, 203 and 55452, that added together give a palindrome (55655).

The spelling of 20355452 in words is "twenty million, three hundred fifty-five thousand, four hundred fifty-two".