213451628 has 24 divisors (see below), whose sum is σ = 410837952. Its totient is φ = 96418944.

The previous prime is 213451621. The next prime is 213451649. The reversal of 213451628 is 826154312.

It is a junction number, because it is equal to n+sod(n) for n = 213451594 and 213451603.

It is not an unprimeable number, because it can be changed into a prime (213451621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41225 + ... + 46112.

It is an arithmetic number, because the mean of its divisors is an integer number (17118248).

Almost surely, 2^213451628 is an apocalyptic number.

It is an amenable number.

213451628 is a deficient number, since it is larger than the sum of its proper divisors (197386324).

213451628 is a wasteful number, since it uses less digits than its factorization.

213451628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87401 (or 87399 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 213451628 is about 14609.9838466714. The cubic root of 213451628 is about 597.6310554419.

The spelling of 213451628 in words is "two hundred thirteen million, four hundred fifty-one thousand, six hundred twenty-eight".