402678892 has 48 divisors (see below), whose sum is σ = 897297408. Its totient is φ = 153544320.

The previous prime is 402678869. The next prime is 402678893. The reversal of 402678892 is 298876204.

It is not an unprimeable number, because it can be changed into a prime (402678893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568 + ... + 28384.

It is an arithmetic number, because the mean of its divisors is an integer number (18693696).

Almost surely, 2^402678892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402678892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448648704).

402678892 is an abundant number, since it is smaller than the sum of its proper divisors (494618516).

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

402678892 is a wasteful number, since it uses less digits than its factorization.

402678892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27886 (or 27884 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 402678892 is about 20066.8605416991. The cubic root of 402678892 is about 738.4474950933.

The spelling of 402678892 in words is "four hundred two million, six hundred seventy-eight thousand, eight hundred ninety-two".