20693148 has 96 divisors (see below), whose sum is σ = 59963904. Its totient is φ = 5419008.

The previous prime is 20693087. The next prime is 20693149. The reversal of 20693148 is 84139602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20693149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61236 + ... + 61572.

It is an arithmetic number, because the mean of its divisors is an integer number (624624).

Almost surely, 2^20693148 is an apocalyptic number.

20693148 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20693148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29981952).

20693148 is an abundant number, since it is smaller than the sum of its proper divisors (39270756).

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

20693148 is a wasteful number, since it uses less digits than its factorization.

20693148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20693148 is about 4548.9721916055. The cubic root of 20693148 is about 274.5420388766.

The spelling of 20693148 in words is "twenty million, six hundred ninety-three thousand, one hundred forty-eight".