312636740 has 96 divisors (see below), whose sum is σ = 728348544. Its totient is φ = 112020480.

The previous prime is 312636691. The next prime is 312636757. The reversal of 312636740 is 47636213.

It is a junction number, because it is equal to n+sod(n) for n = 312636697 and 312636706.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2281952 + ... + 2282088.

It is an arithmetic number, because the mean of its divisors is an integer number (7586964).

Almost surely, 2^312636740 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 312636740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364174272).

312636740 is an abundant number, since it is smaller than the sum of its proper divisors (415711804).

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

312636740 is a wasteful number, since it uses less digits than its factorization.

312636740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 312636740 is about 17681.5366979231. The cubic root of 312636740 is about 678.7033682396.

The spelling of 312636740 in words is "three hundred twelve million, six hundred thirty-six thousand, seven hundred forty".