80631420 has 96 divisors (see below), whose sum is σ = 234964800. Its totient is φ = 20643840.

The previous prime is 80631413. The next prime is 80631427. The reversal of 80631420 is 2413608.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80631413) and next prime (80631427).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80631427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179356 + ... + 179804.

It is an arithmetic number, because the mean of its divisors is an integer number (2447550).

Almost surely, 2^80631420 is an apocalyptic number.

It is a pronic number, being equal to 8979×8980.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80631420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117482400).

80631420 is an abundant number, since it is smaller than the sum of its proper divisors (154333380).

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

80631420 is a wasteful number, since it uses less digits than its factorization.

80631420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 80631420 is about 8979.4999860794. The cubic root of 80631420 is about 432.0175961626.

The spelling of 80631420 in words is "eighty million, six hundred thirty-one thousand, four hundred twenty".