7212958644 has 24 divisors (see below), whose sum is σ = 16903737760. Its totient is φ = 2393819424.

The previous prime is 7212958639. The next prime is 7212958667. The reversal of 7212958644 is 4468592127.

It is a junction number, because it is equal to n+sod(n) for n = 7212958593 and 7212958602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309654 + ... + 1315149.

Almost surely, 2^7212958644 is an apocalyptic number.

It is an amenable number.

7212958644 is an abundant number, since it is smaller than the sum of its proper divisors (9690779116).

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

7212958644 is a wasteful number, since it uses less digits than its factorization.

7212958644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625039 (or 2625037 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 7212958644 is about 84929.1389571330. The cubic root of 7212958644 is about 1932.1365409374.

The spelling of 7212958644 in words is "seven billion, two hundred twelve million, nine hundred fifty-eight thousand, six hundred forty-four".