80309736 has 96 divisors (see below), whose sum is σ = 235872000. Its totient is φ = 24538752.

The previous prime is 80309711. The next prime is 80309737. The reversal of 80309736 is 63790308.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 80309736.

It is not an unprimeable number, because it can be changed into a prime (80309737) 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, 223525 + ... + 223883.

It is an arithmetic number, because the mean of its divisors is an integer number (2457000).

Almost surely, 2^80309736 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 80309736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117936000).

80309736 is an abundant number, since it is smaller than the sum of its proper divisors (155562264).

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

80309736 is a wasteful number, since it uses less digits than its factorization.

80309736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 80309736 is about 8961.5699517439. The cubic root of 80309736 is about 431.4423101963.

It can be divided in two parts, 8030 and 9736, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 80309736 in words is "eighty million, three hundred nine thousand, seven hundred thirty-six".