20397048 has 64 divisors (see below), whose sum is σ = 58613760. Its totient is φ = 5794176.

The previous prime is 20397031. The next prime is 20397073. The reversal of 20397048 is 84079302.

It is a super-2 number, since 2×20397048² = 832079134228608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53065 + ... + 53447.

It is an arithmetic number, because the mean of its divisors is an integer number (915840).

Almost surely, 2^20397048 is an apocalyptic number.

20397048 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 20397048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29306880).

20397048 is an abundant number, since it is smaller than the sum of its proper divisors (38216712).

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

20397048 is a wasteful number, since it uses less digits than its factorization.

20397048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20397048 is about 4516.3091125387. The cubic root of 20397048 is about 273.2262611888.

The spelling of 20397048 in words is "twenty million, three hundred ninety-seven thousand, forty-eight".