1069637428 has 6 divisors (see below), whose sum is σ = 1871865506. Its totient is φ = 534818712.

The previous prime is 1069637381. The next prime is 1069637431. The reversal of 1069637428 is 8247369601.

It can be written as a sum of positive squares in only one way, i.e., 965842084 + 103795344 = 31078^2 + 10188^2 .

It is a super-2 number, since 2×1069637428² = 2288248454756910368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133704675 + ... + 133704682.

Almost surely, 2^1069637428 is an apocalyptic number.

It is an amenable number.

1069637428 is a deficient number, since it is larger than the sum of its proper divisors (802228078).

1069637428 is a wasteful number, since it uses less digits than its factorization.

1069637428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267409361 (or 267409359 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 1069637428 is about 32705.3119232947. The cubic root of 1069637428 is about 1022.6935816315.

The spelling of 1069637428 in words is "one billion, sixty-nine million, six hundred thirty-seven thousand, four hundred twenty-eight".