1208778276 has 12 divisors (see below), whose sum is σ = 2820482672. Its totient is φ = 402926088.

The previous prime is 1208778269. The next prime is 1208778283. The reversal of 1208778276 is 6728778021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1208778269) and next prime (1208778283).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1208778276² = 2922289841059064352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50365750 + ... + 50365773.

Almost surely, 2^1208778276 is an apocalyptic number.

It is an amenable number.

1208778276 is an abundant number, since it is smaller than the sum of its proper divisors (1611704396).

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

1208778276 is a wasteful number, since it uses less digits than its factorization.

1208778276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100731530 (or 100731528 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The square root of 1208778276 is about 34767.4887790303. The cubic root of 1208778276 is about 1065.2434736165.

The spelling of 1208778276 in words is "one billion, two hundred eight million, seven hundred seventy-eight thousand, two hundred seventy-six".