7800738 has 32 divisors (see below), whose sum is σ = 17140032. Its totient is φ = 2347200.

The previous prime is 7800733. The next prime is 7800769. The reversal of 7800738 is 8370087.

7800738 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

7800738 is a modest number, since divided by 738 gives 78 as remainder.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7800699 and 7800708.

It is not an unprimeable number, because it can be changed into a prime (7800733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11620 + ... + 12272.

It is an arithmetic number, because the mean of its divisors is an integer number (535626).

Almost surely, 2^7800738 is an apocalyptic number.

7800738 is an abundant number, since it is smaller than the sum of its proper divisors (9339294).

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

7800738 is a wasteful number, since it uses less digits than its factorization.

7800738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 7800738 is about 2792.9801288230. The cubic root of 7800738 is about 198.3255027548.

It can be divided in two parts, 7 and 800738, that added together give a triangular number (800745 = T₁₂₆₅).

The spelling of 7800738 in words is "seven million, eight hundred thousand, seven hundred thirty-eight".