80521896 has 192 divisors, whose sum is σ = 264297600. Its totient is φ = 20224512.

The previous prime is 80521871. The next prime is 80521913. The reversal of 80521896 is 69812508.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351510 + ... + 351738.

It is an arithmetic number, because the mean of its divisors is an integer number (1376550).

Almost surely, 2^80521896 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 80521896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132148800).

80521896 is an abundant number, since it is smaller than the sum of its proper divisors (183775704).

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

80521896 is a wasteful number, since it uses less digits than its factorization.

80521896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 80521896 is about 8973.3993558740. The cubic root of 80521896 is about 431.8219001792.

The spelling of 80521896 in words is "eighty million, five hundred twenty-one thousand, eight hundred ninety-six".