80781152 has 48 divisors (see below), whose sum is σ = 170063712. Its totient is φ = 37678080.

The previous prime is 80781131. The next prime is 80781157. The reversal of 80781152 is 25118708.

It is a happy number.

It is a super-5 number, since 5×80781152⁵ (a number of 41 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80781157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28838 + ... + 31514.

It is an arithmetic number, because the mean of its divisors is an integer number (3542994).

Almost surely, 2^80781152 is an apocalyptic number.

80781152 is a gapful number since it is divisible by the number (82) 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 80781152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85031856).

80781152 is an abundant number, since it is smaller than the sum of its proper divisors (89282560).

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

80781152 is a wasteful number, since it uses less digits than its factorization.

80781152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2743 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 80781152 is about 8987.8335543111. The cubic root of 80781152 is about 432.2848487172.

The spelling of 80781152 in words is "eighty million, seven hundred eighty-one thousand, one hundred fifty-two".