228787401 has 8 divisors (see below), whose sum is σ = 308195104. Its totient is φ = 150952320.

The previous prime is 228787387. The next prime is 228787423. The reversal of 228787401 is 104787822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228787401 - 2⁵ = 228787369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228787401.

It is not an unprimeable number, because it can be changed into a prime (228787441) 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, 392815 + ... + 393396.

It is an arithmetic number, because the mean of its divisors is an integer number (38524388).

Almost surely, 2^228787401 is an apocalyptic number.

It is an amenable number.

228787401 is a deficient number, since it is larger than the sum of its proper divisors (79407703).

228787401 is an equidigital number, since it uses as much as digits as its factorization.

228787401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786311.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 228787401 is about 15125.7198506385. The cubic root of 228787401 is about 611.6139300070.

The spelling of 228787401 in words is "two hundred twenty-eight million, seven hundred eighty-seven thousand, four hundred one".