20498370 has 64 divisors (see below), whose sum is σ = 51546240. Its totient is φ = 5211648.

The previous prime is 20498363. The next prime is 20498371. The reversal of 20498370 is 7389402.

It is not an unprimeable number, because it can be changed into a prime (20498371) 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, 65334 + ... + 65646.

It is an arithmetic number, because the mean of its divisors is an integer number (805410).

Almost surely, 2^20498370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20498370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25773120).

20498370 is an abundant number, since it is smaller than the sum of its proper divisors (31047870).

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

20498370 is a wasteful number, since it uses less digits than its factorization.

20498370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419.

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

The square root of 20498370 is about 4527.5125621029. The cubic root of 20498370 is about 273.6779297777.

The spelling of 20498370 in words is "twenty million, four hundred ninety-eight thousand, three hundred seventy".