20707148 has 24 divisors (see below), whose sum is σ = 45179904. Its totient is φ = 8067600.

The previous prime is 20707133. The next prime is 20707151. The reversal of 20707148 is 84170702.

It is a self number, because there is not a number n which added to its sum of digits gives 20707148.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33308 + ... + 33923.

It is an arithmetic number, because the mean of its divisors is an integer number (1882496).

Almost surely, 2^20707148 is an apocalyptic number.

20707148 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20707148 is an abundant number, since it is smaller than the sum of its proper divisors (24472756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20707148 is a wasteful number, since it uses less digits than its factorization.

20707148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67253 (or 67251 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 20707148 is about 4550.5107405653. The cubic root of 20707148 is about 274.6039389489.

The spelling of 20707148 in words is "twenty million, seven hundred seven thousand, one hundred forty-eight".