7800450 has 192 divisors, whose sum is σ = 25712640. Its totient is φ = 1520640.

The previous prime is 7800413. The next prime is 7800479. The reversal of 7800450 is 540087.

It is a self number, because there is not a number n which added to its sum of digits gives 7800450.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 339139 + ... + 339161.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

Almost surely, 2^7800450 is an apocalyptic number.

7800450 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7800450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12856320).

7800450 is an abundant number, since it is smaller than the sum of its proper divisors (17912190).

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

7800450 is a wasteful number, since it uses less digits than its factorization.

7800450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 7800450 is about 2792.9285705152. The cubic root of 7800450 is about 198.3230620264.

The spelling of 7800450 in words is "seven million, eight hundred thousand, four hundred fifty".