80451000 has 192 divisors, whose sum is σ = 311014080. Its totient is φ = 18374400.

The previous prime is 80450977. The next prime is 80451001. The reversal of 80451000 is 15408.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80451001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62362 + ... + 63638.

It is an arithmetic number, because the mean of its divisors is an integer number (1619865).

Almost surely, 2^80451000 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 80451000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155507040).

80451000 is an abundant number, since it is smaller than the sum of its proper divisors (230563080).

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

80451000 is a wasteful number, since it uses less digits than its factorization.

80451000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 80451000 is about 8969.4481435593. The cubic root of 80451000 is about 431.6951295481.

Adding to 80451000 its reverse (15408), we get a palindrome (80466408).

It can be divided in two parts, 8045 and 1000, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 80451000 in words is "eighty million, four hundred fifty-one thousand".