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1010901020 = 225971573319
BaseRepresentation
bin111100010000010…
…010000000011100
32121110012002111112
4330100102000130
54032242313040
6244151041152
734023342203
oct7420220034
92543162445
101010901020
11479699998
122426701b8
13131585bac
149838823a
155db36365
hex3c41201c

1010901020 has 48 divisors (see below), whose sum is σ = 2159088960. Its totient is φ = 397522944.

The previous prime is 1010900999. The next prime is 1010901029. The reversal of 1010901020 is 201090101.

It is a junction number, because it is equal to n+sod(n) for n = 1010900986 and 1010901004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010901029) 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, 302921 + ... + 306239.

It is an arithmetic number, because the mean of its divisors is an integer number (44981020).

Almost surely, 21010901020 is an apocalyptic number.

1010901020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010901020 is an abundant number, since it is smaller than the sum of its proper divisors (1148187940).

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

1010901020 is a wasteful number, since it uses less digits than its factorization.

1010901020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582 (or 3580 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1010901020 is about 31794.6696790516. The cubic root of 1010901020 is about 1003.6205491374.

Adding to 1010901020 its reverse (201090101), we get a palindrome (1211991121).

The spelling of 1010901020 in words is "one billion, ten million, nine hundred one thousand, twenty".

Divisors: 1 2 4 5 10 20 97 157 194 314 388 485 628 785 970 1570 1940 3140 3319 6638 13276 15229 16595 30458 33190 60916 66380 76145 152290 304580 321943 521083 643886 1042166 1287772 1609715 2084332 2605415 3219430 5210830 6438860 10421660 50545051 101090102 202180204 252725255 505450510 1010901020