20498632 has 64 divisors (see below), whose sum is σ = 48522240. Its totient is φ = 7886400.

The previous prime is 20498609. The next prime is 20498633. The reversal of 20498632 is 23689402.

It is not an unprimeable number, because it can be changed into a prime (20498633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65757 + ... + 66067.

It is an arithmetic number, because the mean of its divisors is an integer number (758160).

Almost surely, 2^20498632 is an apocalyptic number.

20498632 is a gapful number since it is divisible by the number (22) 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 20498632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24261120).

20498632 is an abundant number, since it is smaller than the sum of its proper divisors (28023608).

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

20498632 is a wasteful number, since it uses less digits than its factorization.

20498632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20498632 is about 4527.5414962207. The cubic root of 20498632 is about 273.6790957780.

The spelling of 20498632 in words is "twenty million, four hundred ninety-eight thousand, six hundred thirty-two".