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20212011232 = 257653138181
BaseRepresentation
bin10010110100101110…
…101101000011100000
31221011121110112222121
4102310232231003200
5312343233324412
613141341314024
71313605155310
oct226456550340
957147415877
1020212011232
118632176216
123b00b65914
131ba15a907a
14d9a513440
157d4699107
hex4b4bad0e0

20212011232 has 48 divisors (see below), whose sum is σ = 45546998112. Its totient is φ = 8648962560.

The previous prime is 20212011221. The next prime is 20212011233. The reversal of 20212011232 is 23211021202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212011233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77182 + ... + 215362.

It is an arithmetic number, because the mean of its divisors is an integer number (948895794).

Almost surely, 220212011232 is an apocalyptic number.

It is an amenable number.

20212011232 is an abundant number, since it is smaller than the sum of its proper divisors (25334986880).

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

20212011232 is a wasteful number, since it uses less digits than its factorization.

20212011232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138851 (or 138843 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20212011232 its reverse (23211021202), we get a palindrome (43423032434).

The spelling of 20212011232 in words is "twenty billion, two hundred twelve million, eleven thousand, two hundred thirty-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 653 1306 2612 4571 5224 9142 10448 18284 20896 36568 73136 138181 146272 276362 552724 967267 1105448 1934534 2210896 3869068 4421792 7738136 15476272 30952544 90232193 180464386 360928772 631625351 721857544 1263250702 1443715088 2526501404 2887430176 5053002808 10106005616 20212011232