2772388 has 6 divisors (see below), whose sum is σ = 4851686. Its totient is φ = 1386192.

The previous prime is 2772383. The next prime is 2772391. The reversal of 2772388 is 8832772.

It can be written as a sum of positive squares in only one way, i.e., 2096704 + 675684 = 1448^2 + 822^2 .

It is a super-2 number, since 2×2772388² = 15372270445088, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2772383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346545 + ... + 346552.

2^2772388 is an apocalyptic number.

It is an amenable number.

2772388 is a deficient number, since it is larger than the sum of its proper divisors (2079298).

2772388 is a wasteful number, since it uses less digits than its factorization.

2772388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693101 (or 693099 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 2772388 is about 1665.0489482295. The cubic root of 2772388 is about 140.4811337239.

It can be divided in two parts, 2772 and 388, that added together give a triangular number (3160 = T₇₉).

The spelling of 2772388 in words is "two million, seven hundred seventy-two thousand, three hundred eighty-eight".