521419628 has 12 divisors (see below), whose sum is σ = 941919552. Its totient is φ = 252299760.

The previous prime is 521419627. The next prime is 521419649. The reversal of 521419628 is 826914125.

It is a junction number, because it is equal to n+sod(n) for n = 521419591 and 521419600.

It is not an unprimeable number, because it can be changed into a prime (521419627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102375 + ... + 2102622.

It is an arithmetic number, because the mean of its divisors is an integer number (78493296).

Almost surely, 2^521419628 is an apocalyptic number.

It is an amenable number.

521419628 is a deficient number, since it is larger than the sum of its proper divisors (420499924).

521419628 is a wasteful number, since it uses less digits than its factorization.

521419628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205032 (or 4205030 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 521419628 is about 22834.6146891074. The cubic root of 521419628 is about 804.8762733086.

It can be divided in two parts, 5214 and 19628, that added together give a palindrome (24842).

The spelling of 521419628 in words is "five hundred twenty-one million, four hundred nineteen thousand, six hundred twenty-eight".