80951886 has 40 divisors (see below), whose sum is σ = 185626584. Its totient is φ = 26354160.

The previous prime is 80951851. The next prime is 80951887. The reversal of 80951886 is 68815908.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80951887) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1156 + ... + 12776.

Almost surely, 2^80951886 is an apocalyptic number.

80951886 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 80951886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92813292).

80951886 is an abundant number, since it is smaller than the sum of its proper divisors (104674698).

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

80951886 is a wasteful number, since it uses less digits than its factorization.

80951886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11678 (or 11669 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 80951886 is about 8997.3266029416. The cubic root of 80951886 is about 432.5891844996.

The spelling of 80951886 in words is "eighty million, nine hundred fifty-one thousand, eight hundred eighty-six".