810547452 has 192 divisors, whose sum is σ = 2549944320. Its totient is φ = 219283200.

The previous prime is 810547447. The next prime is 810547453. The reversal of 810547452 is 254745018.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810547453) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 477918 + ... + 479610.

It is an arithmetic number, because the mean of its divisors is an integer number (13280960).

Almost surely, 2^810547452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810547452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274972160).

810547452 is an abundant number, since it is smaller than the sum of its proper divisors (1739396868).

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

810547452 is a wasteful number, since it uses less digits than its factorization.

810547452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761 (or 1753 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 810547452 is about 28470.1150682606. The cubic root of 810547452 is about 932.3797119792.

The spelling of 810547452 in words is "eight hundred ten million, five hundred forty-seven thousand, four hundred fifty-two".