81482300 has 18 divisors (see below), whose sum is σ = 176816808. Its totient is φ = 32592880.

The previous prime is 81482299. The next prime is 81482327. The reversal of 81482300 is 328418.

It is a self number, because there is not a number n which added to its sum of digits gives 81482300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 407312 + ... + 407511.

It is an arithmetic number, because the mean of its divisors is an integer number (9823156).

Almost surely, 2^81482300 is an apocalyptic number.

It is an amenable number.

81482300 is an abundant number, since it is smaller than the sum of its proper divisors (95334508).

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

81482300 is a wasteful number, since it uses less digits than its factorization.

81482300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814837 (or 814830 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 81482300 is about 9026.7546770697. The cubic root of 81482300 is about 433.5319339492.

The spelling of 81482300 in words is "eighty-one million, four hundred eighty-two thousand, three hundred".