2628138262990 has 32 divisors (see below), whose sum is σ = 4739002329600. Its totient is φ = 1049399324064.

The previous prime is 2628138262961. The next prime is 2628138263137. The reversal of 2628138262990 is 992628318262.

It is a super-2 number, since 2×2628138262990² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110940927 + ... + 110964613.

It is an arithmetic number, because the mean of its divisors is an integer number (148093822800).

Almost surely, 2^{2628138262990} is an apocalyptic number.

2628138262990 is a deficient number, since it is larger than the sum of its proper divisors (2110864066610).

2628138262990 is a wasteful number, since it uses less digits than its factorization.

2628138262990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42816.

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 2628138262990 in words is "two trillion, six hundred twenty-eight billion, one hundred thirty-eight million, two hundred sixty-two thousand, nine hundred ninety".