1233257278 has 16 divisors (see below), whose sum is σ = 2020379760. Its totient is φ = 559926400.

The previous prime is 1233257269. The next prime is 1233257279. The reversal of 1233257278 is 8727523321.

It is a self number, because there is not a number n which added to its sum of digits gives 1233257278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233257279) 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, 12433 + ... + 51196.

It is an arithmetic number, because the mean of its divisors is an integer number (126273735).

Almost surely, 2^1233257278 is an apocalyptic number.

1233257278 is a deficient number, since it is larger than the sum of its proper divisors (787122482).

1233257278 is a wasteful number, since it uses less digits than its factorization.

1233257278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64523.

The product of its digits is 141120, while the sum is 40.

The square root of 1233257278 is about 35117.7629982321. The cubic root of 1233257278 is about 1072.3862306351.

The spelling of 1233257278 in words is "one billion, two hundred thirty-three million, two hundred fifty-seven thousand, two hundred seventy-eight".