2228157 has 12 divisors (see below), whose sum is σ = 3329820. Its totient is φ = 1434048.

The previous prime is 2228153. The next prime is 2228159. The reversal of 2228157 is 7518222.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 617796 = 1269^2 + 786^2 .

It is not a de Polignac number, because 2228157 - 2² = 2228153 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁸ + 2¹³ + 2¹⁸ + 8⁴ + 1 + 5⁹ + 7³ .

2228157 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2228157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4008 + ... + 4529.

It is an arithmetic number, because the mean of its divisors is an integer number (277485).

2^2228157 is an apocalyptic number.

It is an amenable number.

2228157 is a deficient number, since it is larger than the sum of its proper divisors (1101663).

2228157 is a wasteful number, since it uses less digits than its factorization.

2228157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8572 (or 8569 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2228157 is about 1492.7012427140. The cubic root of 2228157 is about 130.6116541236.

The spelling of 2228157 in words is "two million, two hundred twenty-eight thousand, one hundred fifty-seven".