2563730 has 48 divisors (see below), whose sum is σ = 5257224. Its totient is φ = 898560.

The previous prime is 2563723. The next prime is 2563733. The reversal of 2563730 is 373652.

2563730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 38809 + 2524921 = 197^2 + 1589^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 2563730.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62510 + ... + 62550.

2^2563730 is an apocalyptic number.

2563730 is an abundant number, since it is smaller than the sum of its proper divisors (2693494).

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

2563730 is a wasteful number, since it uses less digits than its factorization.

2563730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 2563730 is about 1601.1652007210. The cubic root of 2563730 is about 136.8644831824.

The spelling of 2563730 in words is "two million, five hundred sixty-three thousand, seven hundred thirty".