84503040 has 80 divisors (see below), whose sum is σ = 270170208. Its totient is φ = 22532096.

The previous prime is 84503033. The next prime is 84503053. The reversal of 84503040 is 4030548.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 84503040.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2179 + ... + 13181.

Almost surely, 2^84503040 is an apocalyptic number.

84503040 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 84503040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135085104).

84503040 is an abundant number, since it is smaller than the sum of its proper divisors (185667168).

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

84503040 is a wasteful number, since it uses less digits than its factorization.

84503040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11029 (or 11013 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 84503040 is about 9192.5535081391. The cubic root of 84503040 is about 438.8244100710.

Adding to 84503040 its reverse (4030548), we get a palindrome (88533588).

The spelling of 84503040 in words is "eighty-four million, five hundred three thousand, forty".