20498724 has 48 divisors (see below), whose sum is σ = 54062400. Its totient is φ = 6715008.

The previous prime is 20498707. The next prime is 20498741. The reversal of 20498724 is 42789402.

It is an interprime number because it is at equal distance from previous prime (20498707) and next prime (20498741).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 4764 + ... + 7980.

It is an arithmetic number, because the mean of its divisors is an integer number (1126300).

Almost surely, 2^20498724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20498724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27031200).

20498724 is an abundant number, since it is smaller than the sum of its proper divisors (33563676).

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

20498724 is a wasteful number, since it uses less digits than its factorization.

20498724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289 (or 3281 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 20498724 is about 4527.5516562487. The cubic root of 20498724 is about 273.6795052108.

The spelling of 20498724 in words is "twenty million, four hundred ninety-eight thousand, seven hundred twenty-four".