867049236 has 18 divisors (see below), whose sum is σ = 2191707882. Its totient is φ = 289016400.

The previous prime is 867049223. The next prime is 867049237. The reversal of 867049236 is 632940768.

It can be written as a sum of positive squares in only one way, i.e., 614048400 + 253000836 = 24780^2 + 15906^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 867049191 and 867049200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867049237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12042315 + ... + 12042386.

It is an arithmetic number, because the mean of its divisors is an integer number (121761549).

Almost surely, 2^867049236 is an apocalyptic number.

It is an amenable number.

867049236 is an abundant number, since it is smaller than the sum of its proper divisors (1324658646).

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

867049236 is a wasteful number, since it uses less digits than its factorization.

867049236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24084711 (or 24084706 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 867049236 is about 29445.6997879147. The cubic root of 867049236 is about 953.5597694584.

The spelling of 867049236 in words is "eight hundred sixty-seven million, forty-nine thousand, two hundred thirty-six".