6904428156 has 36 divisors (see below), whose sum is σ = 17570007000. Its totient is φ = 2286028128.

The previous prime is 6904428133. The next prime is 6904428191. The reversal of 6904428156 is 6518244096.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6904428156² = 95342256322731120672, 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 in 11 ways as a sum of consecutive naturals, for example, 638226 + ... + 648953.

It is an arithmetic number, because the mean of its divisors is an integer number (488055750).

Almost surely, 2^6904428156 is an apocalyptic number.

It is an amenable number.

6904428156 is an abundant number, since it is smaller than the sum of its proper divisors (10665578844).

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

6904428156 is a wasteful number, since it uses less digits than its factorization.

6904428156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287338 (or 1287333 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 6904428156 is about 83092.8887209971. Note that the first 3 decimals coincide. The cubic root of 6904428156 is about 1904.1854322231.

The spelling of 6904428156 in words is "six billion, nine hundred four million, four hundred twenty-eight thousand, one hundred fifty-six".