2500816 has 20 divisors (see below), whose sum is σ = 4882500. Its totient is φ = 1240832.

The previous prime is 2500807. The next prime is 2500831. The reversal of 2500816 is 6180052.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1299600 + 1201216 = 1140^2 + 1096^2 .

It is an Ulam number.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1860 + ... + 2908.

It is an arithmetic number, because the mean of its divisors is an integer number (244125).

2^2500816 is an apocalyptic number.

It is an amenable number.

2500816 is a deficient number, since it is larger than the sum of its proper divisors (2381684).

2500816 is a wasteful number, since it uses less digits than its factorization.

2500816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 2500816 is about 1581.3968508885. The cubic root of 2500816 is about 135.7356456553.

Adding to 2500816 its reverse (6180052), we get a palindrome (8680868).

The spelling of 2500816 in words is "two million, five hundred thousand, eight hundred sixteen".