20058240 has 128 divisors (see below), whose sum is σ = 66193920. Its totient is φ = 5160960.

The previous prime is 20058223. The next prime is 20058257. The reversal of 20058240 is 4285002.

It is an interprime number because it is at equal distance from previous prime (20058223) and next prime (20058257).

It is a tau number, because it is divible by the number of its divisors (128).

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, 59352 + ... + 59688.

It is an arithmetic number, because the mean of its divisors is an integer number (517140).

Almost surely, 2^20058240 is an apocalyptic number.

20058240 is a gapful number since it is divisible by the number (20) 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 20058240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33096960).

20058240 is an abundant number, since it is smaller than the sum of its proper divisors (46135680).

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

20058240 is a wasteful number, since it uses less digits than its factorization.

20058240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 20058240 is about 4478.6426515184. The cubic root of 20058240 is about 271.7049857917.

The spelling of 20058240 in words is "twenty million, fifty-eight thousand, two hundred forty".