227890138 has 16 divisors (see below), whose sum is σ = 394539264. Its totient is φ = 96699600.

The previous prime is 227890129. The next prime is 227890139. The reversal of 227890138 is 831098722.

It is a self number, because there is not a number n which added to its sum of digits gives 227890138.

It is not an unprimeable number, because it can be changed into a prime (227890139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79170 + ... + 81997.

It is an arithmetic number, because the mean of its divisors is an integer number (24658704).

Almost surely, 2^227890138 is an apocalyptic number.

227890138 is a deficient number, since it is larger than the sum of its proper divisors (166649126).

227890138 is a wasteful number, since it uses less digits than its factorization.

227890138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161277.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 227890138 is about 15096.0305378599. The cubic root of 227890138 is about 610.8133359213.

It can be divided in two parts, 2278 and 90138, that added together give a square (92416 = 304²).

The spelling of 227890138 in words is "two hundred twenty-seven million, eight hundred ninety thousand, one hundred thirty-eight".