228611401 has 4 divisors (see below), whose sum is σ = 240643600. Its totient is φ = 216579204.

The previous prime is 228611381. The next prime is 228611407. The reversal of 228611401 is 104116822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104116822 = 2 ⋅52058411.

It is a cyclic number.

It is not a de Polignac number, because 228611401 - 2¹⁵ = 228578633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228611407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6016071 + ... + 6016108.

It is an arithmetic number, because the mean of its divisors is an integer number (60160900).

Almost surely, 2^228611401 is an apocalyptic number.

It is an amenable number.

228611401 is a deficient number, since it is larger than the sum of its proper divisors (12032199).

228611401 is a wasteful number, since it uses less digits than its factorization.

228611401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12032198.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 228611401 is about 15119.9008263943. The cubic root of 228611401 is about 611.4570570534.

The spelling of 228611401 in words is "two hundred twenty-eight million, six hundred eleven thousand, four hundred one".