1261704888 has 48 divisors (see below), whose sum is σ = 3422557320. Its totient is φ = 419898816.

The previous prime is 1261704887. The next prime is 1261704889. The reversal of 1261704888 is 8884071621.

It is an interprime number because it is at equal distance from previous prime (1261704887) and next prime (1261704889).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261704881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32670 + ... + 59922.

Almost surely, 2^1261704888 is an apocalyptic number.

1261704888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1261704888 is an abundant number, since it is smaller than the sum of its proper divisors (2160852432).

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

1261704888 is a wasteful number, since it uses less digits than its factorization.

1261704888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27908 (or 27901 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1261704888 is about 35520.4854696554. The cubic root of 1261704888 is about 1080.5692266787.

The spelling of 1261704888 in words is "one billion, two hundred sixty-one million, seven hundred four thousand, eight hundred eighty-eight".