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10001020 = 2251014951
BaseRepresentation
bin100110001001…
…101001111100
3200211002211011
4212021221330
510030013040
6554205004
7151002331
oct46115174
920732734
1010001020
115710a07
123423764
1320c2183
141484988
15d283ea
hex989a7c

10001020 has 24 divisors (see below), whose sum is σ = 21214368. Its totient is φ = 3960000.

The previous prime is 10001009. The next prime is 10001053. The reversal of 10001020 is 2010001.

10001020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456 + ... + 4495.

It is an arithmetic number, because the mean of its divisors is an integer number (883932).

Almost surely, 210001020 is an apocalyptic number.

10001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001020 is an abundant number, since it is smaller than the sum of its proper divisors (11213348).

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

10001020 is a wasteful number, since it uses less digits than its factorization.

10001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061 (or 5059 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 10001020 is about 3162.4389322167. The cubic root of 10001020 is about 215.4507938321.

Adding to 10001020 its reverse (2010001), we get a palindrome (12011021).

The spelling of 10001020 in words is "ten million, one thousand, twenty".

Divisors: 1 2 4 5 10 20 101 202 404 505 1010 2020 4951 9902 19804 24755 49510 99020 500051 1000102 2000204 2500255 5000510 10001020