20454152 has 24 divisors (see below), whose sum is σ = 38888190. Its totient is φ = 10085760.

The previous prime is 20454143. The next prime is 20454157. The reversal of 20454152 is 25145402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15319396 + 5134756 = 3914^2 + 2266^2 .

It is not an unprimeable number, because it can be changed into a prime (20454157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84752 + ... + 84992.

Almost surely, 2^20454152 is an apocalyptic number.

It is an amenable number.

20454152 is a deficient number, since it is larger than the sum of its proper divisors (18434038).

20454152 is a wasteful number, since it uses less digits than its factorization.

20454152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 20454152 is about 4522.6266704206. The cubic root of 20454152 is about 273.4810002543.

Adding to 20454152 its reverse (25145402), we get a palindrome (45599554).

The spelling of 20454152 in words is "twenty million, four hundred fifty-four thousand, one hundred fifty-two".