811483520 has 32 divisors (see below), whose sum is σ = 1939954320. Its totient is φ = 324593152.

The previous prime is 811483489. The next prime is 811483523. The reversal of 811483520 is 25384118.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811483523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633332 + ... + 634611.

Almost surely, 2^811483520 is an apocalyptic number.

811483520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

811483520 is an abundant number, since it is smaller than the sum of its proper divisors (1128470800).

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

811483520 is a wasteful number, since it uses less digits than its factorization.

811483520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267962 (or 1267950 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 811483520 is about 28486.5498086378. The cubic root of 811483520 is about 932.7384962592.

The spelling of 811483520 in words is "eight hundred eleven million, four hundred eighty-three thousand, five hundred twenty".