402680436 has 24 divisors (see below), whose sum is σ = 940824864. Its totient is φ = 134050080.

The previous prime is 402680419. The next prime is 402680437. The reversal of 402680436 is 634086204.

It is a junction number, because it is equal to n+sod(n) for n = 402680397 and 402680406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402680437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12430 + ... + 30981.

It is an arithmetic number, because the mean of its divisors is an integer number (39201036).

Almost surely, 2^402680436 is an apocalyptic number.

It is an amenable number.

402680436 is an abundant number, since it is smaller than the sum of its proper divisors (538144428).

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

402680436 is a wasteful number, since it uses less digits than its factorization.

402680436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44191 (or 44189 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 402680436 is about 20066.8990130513. The cubic root of 402680436 is about 738.4484389069.

The spelling of 402680436 in words is "four hundred two million, six hundred eighty thousand, four hundred thirty-six".