80269644 has 72 divisors (see below), whose sum is σ = 234656688. Its totient is φ = 21168000.

The previous prime is 80269643. The next prime is 80269667. The reversal of 80269644 is 44696208.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (80269643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2394 + ... + 12894.

Almost surely, 2^80269644 is an apocalyptic number.

80269644 is a gapful number since it is divisible by the number (84) 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 80269644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117328344).

80269644 is an abundant number, since it is smaller than the sum of its proper divisors (154387044).

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

80269644 is a wasteful number, since it uses less digits than its factorization.

80269644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535 (or 10526 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 80269644 is about 8959.3327876578. The cubic root of 80269644 is about 431.3705037747.

The spelling of 80269644 in words is "eighty million, two hundred sixty-nine thousand, six hundred forty-four".