1269697272 has 16 divisors (see below), whose sum is σ = 3174243240. Its totient is φ = 423232416.

The previous prime is 1269697271. The next prime is 1269697283. The reversal of 1269697272 is 2727969621.

It is a super-2 number, since 2×1269697272² = 3224262325048483968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269697271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26452003 + ... + 26452050.

Almost surely, 2^1269697272 is an apocalyptic number.

1269697272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1269697272 is an abundant number, since it is smaller than the sum of its proper divisors (1904545968).

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

1269697272 is a wasteful number, since it uses less digits than its factorization.

1269697272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52904062 (or 52904058 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 1269697272 is about 35632.8117330081. The cubic root of 1269697272 is about 1082.8460803568.

The spelling of 1269697272 in words is "one billion, two hundred sixty-nine million, six hundred ninety-seven thousand, two hundred seventy-two".