2238690 has 16 divisors (see below), whose sum is σ = 5372928. Its totient is φ = 596976.

The previous prime is 2238673. The next prime is 2238703. The reversal of 2238690 is 968322.

It is a super-2 number, since 2×2238690² = 10023465832200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 74623 = 2238690 / (2 + 2 + 3 + 8 + 6 + 9 + 0).

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁷ + 3⁷ + 8⁷ + 6 + 9² + 0 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37282 + ... + 37341.

It is an arithmetic number, because the mean of its divisors is an integer number (335808).

2^2238690 is an apocalyptic number.

2238690 is an abundant number, since it is smaller than the sum of its proper divisors (3134238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2238690 is a wasteful number, since it uses less digits than its factorization.

2238690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74633.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2238690 is about 1496.2252504219. The cubic root of 2238690 is about 130.8171409047.

The spelling of 2238690 in words is "two million, two hundred thirty-eight thousand, six hundred ninety".