80862100 has 144 divisors (see below), whose sum is σ = 208111680. Its totient is φ = 26956800.

The previous prime is 80862091. The next prime is 80862101. The reversal of 80862100 is 126808.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80862101) 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, 1107664 + ... + 1107736.

It is an arithmetic number, because the mean of its divisors is an integer number (1445220).

Almost surely, 2^80862100 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 80862100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104055840).

80862100 is an abundant number, since it is smaller than the sum of its proper divisors (127249580).

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

80862100 is a wasteful number, since it uses less digits than its factorization.

80862100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 80862100 is about 8992.3356254090. The cubic root of 80862100 is about 432.4291930817.

Adding to 80862100 its reverse (126808), we get a palindrome (80988908).

The spelling of 80862100 in words is "eighty million, eight hundred sixty-two thousand, one hundred".