11342778 has 16 divisors (see below), whose sum is σ = 22852800. Its totient is φ = 3753056.

The previous prime is 11342759. The next prime is 11342819. The reversal of 11342778 is 87724311.

It is a happy number.

It is a super-2 number, since 2×11342778² = 257317225514568, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6078 + ... + 7721.

It is an arithmetic number, because the mean of its divisors is an integer number (1428300).

Almost surely, 2^11342778 is an apocalyptic number.

11342778 is an abundant number, since it is smaller than the sum of its proper divisors (11510022).

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

11342778 is a wasteful number, since it uses less digits than its factorization.

11342778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13941.

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

The square root of 11342778 is about 3367.9040960217. The cubic root of 11342778 is about 224.6845158748.

The spelling of 11342778 in words is "eleven million, three hundred forty-two thousand, seven hundred seventy-eight".