20948501 has 8 divisors (see below), whose sum is σ = 23970240. Its totient is φ = 17934048.

The previous prime is 20948497. The next prime is 20948503. The reversal of 20948501 is 10584902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20948501 - 2² = 20948497 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20948503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7625 + ... + 10001.

It is an arithmetic number, because the mean of its divisors is an integer number (2996280).

Almost surely, 2^20948501 is an apocalyptic number.

It is an amenable number.

20948501 is a deficient number, since it is larger than the sum of its proper divisors (3021739).

20948501 is a wasteful number, since it uses less digits than its factorization.

20948501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 20948501 is about 4576.9532442445. The cubic root of 20948501 is about 275.6667063069. Note that the first 3 decimals are identical.

The spelling of 20948501 in words is "twenty million, nine hundred forty-eight thousand, five hundred one".