80397756 has 72 divisors (see below), whose sum is σ = 213403008. Its totient is φ = 25488000.

The previous prime is 80397749. The next prime is 80397763. The reversal of 80397756 is 65779308.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80397749) and next prime (80397763).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67486 + ... + 68666.

Almost surely, 2^80397756 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 80397756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106701504).

80397756 is an abundant number, since it is smaller than the sum of its proper divisors (133005252).

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

80397756 is a wasteful number, since it uses less digits than its factorization.

80397756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 80397756 is about 8966.4795767347. The cubic root of 80397756 is about 431.5998738520.

The spelling of 80397756 in words is "eighty million, three hundred ninety-seven thousand, seven hundred fifty-six".