20210400030 has 32 divisors (see below), whose sum is σ = 48508927488. Its totient is φ = 5388999200.

The previous prime is 20210400019. The next prime is 20210400043. The reversal of 20210400030 is 3000401202.

It is a junction number, because it is equal to n+sod(n) for n = 20210399979 and 20210400015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530935 + ... + 567725.

It is an arithmetic number, because the mean of its divisors is an integer number (1515903984).

Almost surely, 2^20210400030 is an apocalyptic number.

20210400030 is an abundant number, since it is smaller than the sum of its proper divisors (28298527458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20210400030 is a wasteful number, since it uses less digits than its factorization.

20210400030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55112.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20210400030 its reverse (3000401202), we get a palindrome (23210801232).

The spelling of 20210400030 in words is "twenty billion, two hundred ten million, four hundred thousand, thirty".