20308030870 has 32 divisors (see below), whose sum is σ = 39719623680. Its totient is φ = 7447425120.

The previous prime is 20308030859. The next prime is 20308030903. The reversal of 20308030870 is 7803080302.

It is a super-2 number, since 2×20308030870² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1718052 + ... + 1729831.

It is an arithmetic number, because the mean of its divisors is an integer number (1241238240).

Almost surely, 2^20308030870 is an apocalyptic number.

20308030870 is a deficient number, since it is larger than the sum of its proper divisors (19411592810).

20308030870 is a wasteful number, since it uses less digits than its factorization.

20308030870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447940.

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 20308030870 in words is "twenty billion, three hundred eight million, thirty thousand, eight hundred seventy".