1070686728 has 64 divisors (see below), whose sum is σ = 3076704000. Its totient is φ = 344586816.

The previous prime is 1070686717. The next prime is 1070686739. The reversal of 1070686728 is 8276860701.

It is an interprime number because it is at equal distance from previous prime (1070686717) and next prime (1070686739).

It is a super-2 number, since 2×1070686728² = 2292740139030691968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79200 + ... + 91727.

It is an arithmetic number, because the mean of its divisors is an integer number (48073500).

Almost surely, 2^1070686728 is an apocalyptic number.

1070686728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1070686728 is an abundant number, since it is smaller than the sum of its proper divisors (2006017272).

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

1070686728 is a wasteful number, since it uses less digits than its factorization.

1070686728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170971 (or 170961 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1070686728 is about 32721.3497276625. The cubic root of 1070686728 is about 1023.0278885767.

The spelling of 1070686728 in words is "one billion, seventy million, six hundred eighty-six thousand, seven hundred twenty-eight".