20341988 has 6 divisors (see below), whose sum is σ = 35598486. Its totient is φ = 10170992.

The previous prime is 20341987. The next prime is 20341991. The reversal of 20341988 is 88914302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20268004 + 73984 = 4502^2 + 272^2 .

It is not an unprimeable number, because it can be changed into a prime (20341987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2542745 + ... + 2542752.

It is an arithmetic number, because the mean of its divisors is an integer number (5933081).

Almost surely, 2^20341988 is an apocalyptic number.

It is an amenable number.

20341988 is a deficient number, since it is larger than the sum of its proper divisors (15256498).

20341988 is a wasteful number, since it uses less digits than its factorization.

20341988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085501 (or 5085499 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20341988 is about 4510.2093077816. The cubic root of 20341988 is about 272.9801897185.

The spelling of 20341988 in words is "twenty million, three hundred forty-one thousand, nine hundred eighty-eight".