20155076 has 6 divisors (see below), whose sum is σ = 35271390. Its totient is φ = 10077536.

The previous prime is 20155073. The next prime is 20155097. The reversal of 20155076 is 67055102.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 7974976 = 3490^2 + 2824^2 .

It is not an unprimeable number, because it can be changed into a prime (20155073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2519381 + ... + 2519388.

It is an arithmetic number, because the mean of its divisors is an integer number (5878565).

Almost surely, 2^20155076 is an apocalyptic number.

It is an amenable number.

20155076 is a deficient number, since it is larger than the sum of its proper divisors (15116314).

20155076 is a wasteful number, since it uses less digits than its factorization.

20155076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038773 (or 5038771 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 20155076 is about 4489.4404996614. The cubic root of 20155076 is about 272.1415245339.

Adding to 20155076 its sum of digits (26), we get a palindrome (20155102).

The spelling of 20155076 in words is "twenty million, one hundred fifty-five thousand, seventy-six".