11402878 has 4 divisors (see below), whose sum is σ = 17104320. Its totient is φ = 5701438.

The previous prime is 11402873. The next prime is 11402933. The reversal of 11402878 is 87820411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87820411 = 7 ⋅12545773.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2850718 + ... + 2850721.

It is an arithmetic number, because the mean of its divisors is an integer number (4276080).

Almost surely, 2^11402878 is an apocalyptic number.

11402878 is a deficient number, since it is larger than the sum of its proper divisors (5701442).

11402878 is an equidigital number, since it uses as much as digits as its factorization.

11402878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5701441.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 11402878 is about 3376.8147713489. The cubic root of 11402878 is about 225.0806492778.

The spelling of 11402878 in words is "eleven million, four hundred two thousand, eight hundred seventy-eight".