203420628534 has 16 divisors (see below), whose sum is σ = 407335606272. Its totient is φ = 67724484648.

The previous prime is 203420628503. The next prime is 203420628539. The reversal of 203420628534 is 435826024302.

It is a super-2 number, since 2×203420628534² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203420628492 and 203420628501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203420628539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20592534 + ... + 20602409.

It is an arithmetic number, because the mean of its divisors is an integer number (25458475392).

Almost surely, 2^203420628534 is an apocalyptic number.

203420628534 is an abundant number, since it is smaller than the sum of its proper divisors (203914977738).

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

203420628534 is a wasteful number, since it uses less digits than its factorization.

203420628534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41195771.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 203420628534 in words is "two hundred three billion, four hundred twenty million, six hundred twenty-eight thousand, five hundred thirty-four".