2277840 has 40 divisors (see below), whose sum is σ = 7062048. Its totient is φ = 607360.

The previous prime is 2277833. The next prime is 2277841. The reversal of 2277840 is 487722.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2277798 and 2277807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2277841) 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, 4506 + ... + 4985.

2^2277840 is an apocalyptic number.

2277840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2277840 is an abundant number, since it is smaller than the sum of its proper divisors (4784208).

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

2277840 is a wasteful number, since it uses less digits than its factorization.

2277840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9507 (or 9501 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2277840 is about 1509.2514701003. The cubic root of 2277840 is about 131.5753109451.

The spelling of 2277840 in words is "two million, two hundred seventy-seven thousand, eight hundred forty".