2451816 has 32 divisors (see below), whose sum is σ = 6811200. Its totient is φ = 817200.

The previous prime is 2451811. The next prime is 2451847. The reversal of 2451816 is 6181542.

It is a super-2 number, since 2×2451816² = 12022803395712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2451816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451811) 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, 5460 + ... + 5891.

It is an arithmetic number, because the mean of its divisors is an integer number (212850).

2^2451816 is an apocalyptic number.

It is an amenable number.

2451816 is an abundant number, since it is smaller than the sum of its proper divisors (4359384).

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

2451816 is a wasteful number, since it uses less digits than its factorization.

2451816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11366 (or 11356 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2451816 is about 1565.8275767146. The cubic root of 2451816 is about 134.8432749142.

The spelling of 2451816 in words is "two million, four hundred fifty-one thousand, eight hundred sixteen".