2293788 has 72 divisors (see below), whose sum is σ = 6435072. Its totient is φ = 633696.

The previous prime is 2293777. The next prime is 2293789. The reversal of 2293788 is 8873922.

It is a super-2 number, since 2×2293788² = 10522926777888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2293789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27595 + ... + 27677.

It is an arithmetic number, because the mean of its divisors is an integer number (89376).

2^2293788 is an apocalyptic number.

2293788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2293788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3217536).

2293788 is an abundant number, since it is smaller than the sum of its proper divisors (4141284).

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

2293788 is a wasteful number, since it uses less digits than its factorization.

2293788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 142 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 2293788 is about 1514.5256683200. The cubic root of 2293788 is about 131.8816662174.

It can be divided in two parts, 2293 and 788, that added together give a triangular number (3081 = T₇₈).

The spelling of 2293788 in words is "two million, two hundred ninety-three thousand, seven hundred eighty-eight".