20598396 has 72 divisors (see below), whose sum is σ = 59520384. Its totient is φ = 5428800.

The previous prime is 20598377. The next prime is 20598401. The reversal of 20598396 is 69389502.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13471 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (826672).

Almost surely, 2^20598396 is an apocalyptic number.

20598396 is a gapful number since it is divisible by the number (26) 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 20598396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29760192).

20598396 is an abundant number, since it is smaller than the sum of its proper divisors (38921988).

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

20598396 is a wasteful number, since it uses less digits than its factorization.

20598396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491 (or 1476 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 20598396 is about 4538.5455820119. The cubic root of 20598396 is about 274.1223635183.

The spelling of 20598396 in words is "twenty million, five hundred ninety-eight thousand, three hundred ninety-six".