80947700 has 72 divisors (see below), whose sum is σ = 184154880. Its totient is φ = 30844800.

The previous prime is 80947697. The next prime is 80947703. The reversal of 80947700 is 774908.

It is an interprime number because it is at equal distance from previous prime (80947697) and next prime (80947703).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80947703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298565 + ... + 298835.

Almost surely, 2^80947700 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 80947700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92077440).

80947700 is an abundant number, since it is smaller than the sum of its proper divisors (103207180).

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

80947700 is a wasteful number, since it uses less digits than its factorization.

80947700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 80947700 is about 8997.0939752789. The cubic root of 80947700 is about 432.5817280147.

The spelling of 80947700 in words is "eighty million, nine hundred forty-seven thousand, seven hundred".