2298780 has 144 divisors (see below), whose sum is σ = 8072064. Its totient is φ = 544320.

The previous prime is 2298763. The next prime is 2298787. The reversal of 2298780 is 878922.

2298780 = T₃₀₁ + T₃₀₂ + ... + T₃₄₄.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2298787) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53439 + ... + 53481.

It is an arithmetic number, because the mean of its divisors is an integer number (56056).

2^2298780 is an apocalyptic number.

2298780 is a gapful number since it is divisible by the number (20) 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 2298780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4036032).

2298780 is an abundant number, since it is smaller than the sum of its proper divisors (5773284).

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

2298780 is a wasteful number, since it uses less digits than its factorization.

2298780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2298780 is about 1516.1728133692. The cubic root of 2298780 is about 131.9772688131.

It can be divided in two parts, 229 and 8780, that added together give a palindrome (9009).

The spelling of 2298780 in words is "two million, two hundred ninety-eight thousand, seven hundred eighty".