20601628 has 6 divisors (see below), whose sum is σ = 36052856. Its totient is φ = 10300812.

The previous prime is 20601617. The next prime is 20601667. The reversal of 20601628 is 82610602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2575200 + ... + 2575207.

Almost surely, 2^20601628 is an apocalyptic number.

It is an amenable number.

20601628 is a deficient number, since it is larger than the sum of its proper divisors (15451228).

20601628 is a wasteful number, since it uses less digits than its factorization.

20601628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5150411 (or 5150409 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20601628 is about 4538.9016292491. The cubic root of 20601628 is about 274.1366998635.

The spelling of 20601628 in words is "twenty million, six hundred one thousand, six hundred twenty-eight".