80015040 has 392 divisors, whose sum is σ = 333146400. Its totient is φ = 18289152.

The previous prime is 80015029. The next prime is 80015041. The reversal of 80015040 is 4051008.

It is a tau number, because it is divible by the number of its divisors (392).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (80015041) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 11430717 + ... + 11430723.

Almost surely, 2^80015040 is an apocalyptic number.

80015040 is a gapful number since it is divisible by the number (80) 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 80015040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166573200).

80015040 is an abundant number, since it is smaller than the sum of its proper divisors (253131360).

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

80015040 is an frugal number, since it uses more digits than its factorization.

80015040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 80015040 is about 8945.1126320466. The cubic root of 80015040 is about 430.9139385625.

Adding to 80015040 its reverse (4051008), we get a palindrome (84066048).

It can be divided in two parts, 8001 and 5040, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 80015040 in words is "eighty million, fifteen thousand, forty".