2354640 has 40 divisors (see below), whose sum is σ = 7300128. Its totient is φ = 627840.

The previous prime is 2354633. The next prime is 2354641. The reversal of 2354640 is 464532.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2354640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2354641) 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, 4666 + ... + 5145.

2^2354640 is an apocalyptic number.

2354640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2354640 is an abundant number, since it is smaller than the sum of its proper divisors (4945488).

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

2354640 is a wasteful number, since it uses less digits than its factorization.

2354640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9827 (or 9821 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2354640 is about 1534.4836265011. The cubic root of 2354640 is about 133.0377340311.

The spelling of 2354640 in words is "two million, three hundred fifty-four thousand, six hundred forty".