80215040 has 44 divisors (see below), whose sum is σ = 192434376. Its totient is φ = 32083968.

The previous prime is 80214997. The next prime is 80215049. The reversal of 80215040 is 4051208.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80215049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2714 + ... + 12953.

Almost surely, 2^80215040 is an apocalyptic number.

80215040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80215040 is an abundant number, since it is smaller than the sum of its proper divisors (112219336).

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

80215040 is a wasteful number, since it uses less digits than its factorization.

80215040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15692 (or 15674 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 80215040 is about 8956.2849441049. The cubic root of 80215040 is about 431.2726672956.

Adding to 80215040 its reverse (4051208), we get a palindrome (84266248).

The spelling of 80215040 in words is "eighty million, two hundred fifteen thousand, forty".