226978 has 4 divisors (see below), whose sum is σ = 340470. Its totient is φ = 113488.

The previous prime is 226943. The next prime is 226991. The reversal of 226978 is 879622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879622 = 2 ⋅439811.

It can be written as a sum of positive squares in only one way, i.e., 223729 + 3249 = 473^2 + 57^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56743 + ... + 56746.

2²²⁶⁹⁷⁸ is an apocalyptic number.

226978 is a deficient number, since it is larger than the sum of its proper divisors (113492).

226978 is a wasteful number, since it uses less digits than its factorization.

226978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113491.

The product of its digits is 12096, while the sum is 34.

The square root of 226978 is about 476.4220817720. The cubic root of 226978 is about 60.9997312539. Note that the first 3 decimals are identical.

It can be divided in two parts, 2 and 26978, that multiplied together give a triangular number (53956 = T₃₂₈).

The spelling of 226978 in words is "two hundred twenty-six thousand, nine hundred seventy-eight".