1122547278 has 16 divisors (see below), whose sum is σ = 2272144896. Its totient is φ = 369674040.

The previous prime is 1122547273. The next prime is 1122547289. The reversal of 1122547278 is 8727452211.

It is a super-2 number, since 2×1122547278² = 2520224782690418568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122547271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126558 + ... + 1127553.

It is an arithmetic number, because the mean of its divisors is an integer number (142009056).

Almost surely, 2^1122547278 is an apocalyptic number.

1122547278 is an abundant number, since it is smaller than the sum of its proper divisors (1149597618).

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

1122547278 is a wasteful number, since it uses less digits than its factorization.

1122547278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254199.

The product of its digits is 62720, while the sum is 39.

The square root of 1122547278 is about 33504.4366912802. The cubic root of 1122547278 is about 1039.2855293712.

Adding to 1122547278 its reverse (8727452211), we get a palindrome (9849999489).

The spelling of 1122547278 in words is "one billion, one hundred twenty-two million, five hundred forty-seven thousand, two hundred seventy-eight".