7398878 has 4 divisors (see below), whose sum is σ = 11098320. Its totient is φ = 3699438.

The previous prime is 7398829. The next prime is 7398883. The reversal of 7398878 is 8788937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8788937 = 53 ⋅165829.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1849718 + ... + 1849721.

It is an arithmetic number, because the mean of its divisors is an integer number (2774580).

Almost surely, 2^7398878 is an apocalyptic number.

7398878 is a deficient number, since it is larger than the sum of its proper divisors (3699442).

7398878 is a wasteful number, since it uses less digits than its factorization.

7398878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699441.

The product of its digits is 677376, while the sum is 50.

The square root of 7398878 is about 2720.0878662279. The cubic root of 7398878 is about 194.8596667290.

The spelling of 7398878 in words is "seven million, three hundred ninety-eight thousand, eight hundred seventy-eight".