226128956 has 36 divisors (see below), whose sum is σ = 420852600. Its totient is φ = 106293600.

The previous prime is 226128949. The next prime is 226128967. The reversal of 226128956 is 659821622.

It is a super-2 number, since 2×226128956² = 102268609483299872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214631 + ... + 215681.

It is an arithmetic number, because the mean of its divisors is an integer number (11690350).

Almost surely, 2^226128956 is an apocalyptic number.

It is an amenable number.

226128956 is a deficient number, since it is larger than the sum of its proper divisors (194723644).

226128956 is a wasteful number, since it uses less digits than its factorization.

226128956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1221 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 226128956 is about 15037.5847794784. The cubic root of 226128956 is about 609.2357678343.

The spelling of 226128956 in words is "two hundred twenty-six million, one hundred twenty-eight thousand, nine hundred fifty-six".