20257826810 has 32 divisors (see below), whose sum is σ = 39276703872. Its totient is φ = 7478349120.

The previous prime is 20257826767. The next prime is 20257826819. The reversal of 20257826810 is 1862875202.

It is a super-2 number, since 2×20257826810² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20257826819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831827 + ... + 855833.

It is an arithmetic number, because the mean of its divisors is an integer number (1227396996).

Almost surely, 2^20257826810 is an apocalyptic number.

20257826810 is a deficient number, since it is larger than the sum of its proper divisors (19018877062).

20257826810 is a wasteful number, since it uses less digits than its factorization.

20257826810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30518.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 20257826810 in words is "twenty billion, two hundred fifty-seven million, eight hundred twenty-six thousand, eight hundred ten".