20122988 has 6 divisors (see below), whose sum is σ = 35215236. Its totient is φ = 10061492.

The previous prime is 20122979. The next prime is 20122997. The reversal of 20122988 is 88922102.

It is an interprime number because it is at equal distance from previous prime (20122979) and next prime (20122997).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2515370 + ... + 2515377.

It is an arithmetic number, because the mean of its divisors is an integer number (5869206).

Almost surely, 2^20122988 is an apocalyptic number.

It is an amenable number.

20122988 is a deficient number, since it is larger than the sum of its proper divisors (15092248).

20122988 is a wasteful number, since it uses less digits than its factorization.

20122988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030751 (or 5030749 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 20122988 is about 4485.8653568737. The cubic root of 20122988 is about 271.9970263516.

The spelling of 20122988 in words is "twenty million, one hundred twenty-two thousand, nine hundred eighty-eight".