228407964 has 12 divisors (see below), whose sum is σ = 532951944. Its totient is φ = 76135984.

The previous prime is 228407957. The next prime is 228407981. The reversal of 228407964 is 469704822.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9516987 + ... + 9517010.

It is an arithmetic number, because the mean of its divisors is an integer number (44412662).

Almost surely, 2^228407964 is an apocalyptic number.

It is an amenable number.

228407964 is an abundant number, since it is smaller than the sum of its proper divisors (304543980).

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

228407964 is a wasteful number, since it uses less digits than its factorization.

228407964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19034004 (or 19034002 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 228407964 is about 15113.1718709211. The cubic root of 228407964 is about 611.2756285021.

The spelling of 228407964 in words is "two hundred twenty-eight million, four hundred seven thousand, nine hundred sixty-four".