80369520 has 160 divisors (see below), whose sum is σ = 310694400. Its totient is φ = 16696320.

The previous prime is 80369507. The next prime is 80369551. The reversal of 80369520 is 2596308.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16306 + ... + 20654.

It is an arithmetic number, because the mean of its divisors is an integer number (1941840).

Almost surely, 2^80369520 is an apocalyptic number.

80369520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80369520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155347200).

80369520 is an abundant number, since it is smaller than the sum of its proper divisors (230324880).

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

80369520 is a wasteful number, since it uses less digits than its factorization.

80369520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383 (or 4377 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 80369520 is about 8964.9049074711. The cubic root of 80369520 is about 431.5493414259.

The spelling of 80369520 in words is "eighty million, three hundred sixty-nine thousand, five hundred twenty".