1000672840 has 32 divisors (see below), whose sum is σ = 2329155000. Its totient is φ = 386466304.

The previous prime is 1000672801. The next prime is 1000672873. The reversal of 1000672840 is 482760001.

It can be written as a sum of positive squares in 4 ways, for example, as 926471844 + 74200996 = 30438^2 + 8614^2 .

It is a super-2 number, since 2×1000672840² = 2002692265427331200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1000672799 and 1000672808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430165 + ... + 432484.

Almost surely, 2^1000672840 is an apocalyptic number.

1000672840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000672840 is an abundant number, since it is smaller than the sum of its proper divisors (1328482160).

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

1000672840 is a wasteful number, since it uses less digits than its factorization.

1000672840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862689 (or 862685 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1000672840 is about 31633.4133472820. The cubic root of 1000672840 is about 1000.2242297173.

The spelling of 1000672840 in words is "one billion, six hundred seventy-two thousand, eight hundred forty".