7798455 has 48 divisors (see below), whose sum is σ = 16273920. Its totient is φ = 3374784.

The previous prime is 7798421. The next prime is 7798457. The reversal of 7798455 is 5548977.

It is not a de Polignac number, because 7798455 - 2⁸ = 7798199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7798455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7798457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5334 + ... + 6636.

It is an arithmetic number, because the mean of its divisors is an integer number (339040).

Almost surely, 2^7798455 is an apocalyptic number.

7798455 is an abundant number, since it is smaller than the sum of its proper divisors (8475465).

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

7798455 is a wasteful number, since it uses less digits than its factorization.

7798455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1337 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 7798455 is about 2792.5713956853. The cubic root of 7798455 is about 198.3061532479.

The spelling of 7798455 in words is "seven million, seven hundred ninety-eight thousand, four hundred fifty-five".