213946928 has 40 divisors (see below), whose sum is σ = 450627408. Its totient is φ = 97811712.

The previous prime is 213946877. The next prime is 213946939. The reversal of 213946928 is 829649312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17450 + ... + 27062.

Almost surely, 2^213946928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213946928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225313704).

213946928 is an abundant number, since it is smaller than the sum of its proper divisors (236680480).

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

213946928 is a wasteful number, since it uses less digits than its factorization.

213946928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9741 (or 9735 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 213946928 is about 14626.9247622321. The cubic root of 213946928 is about 598.0929524453.

The spelling of 213946928 in words is "two hundred thirteen million, nine hundred forty-six thousand, nine hundred twenty-eight".