20628242770 has 16 divisors (see below), whose sum is σ = 37188237888. Its totient is φ = 8238541360.

The previous prime is 20628242749. The next prime is 20628242771. The reversal of 20628242770 is 7724282602.

It is a happy number.

It is a super-3 number, since 3×20628242770³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20628242771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1587676 + ... + 1600615.

It is an arithmetic number, because the mean of its divisors is an integer number (2324264868).

Almost surely, 2^20628242770 is an apocalyptic number.

20628242770 is a deficient number, since it is larger than the sum of its proper divisors (16559995118).

20628242770 is a wasteful number, since it uses less digits than its factorization.

20628242770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188945.

The product of its (nonzero) digits is 150528, while the sum is 40.

The spelling of 20628242770 in words is "twenty billion, six hundred twenty-eight million, two hundred forty-two thousand, seven hundred seventy".