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20200402872 = 23321397271821
BaseRepresentation
bin10010110100000010…
…011010111110111000
31221010210121210022100
4102310002122332320
5312332300342442
613140244423400
71313404406556
oct226402327670
957123553270
1020200402872
118626667731
123ab90a7b60
131b9c073410
14d98b70bd6
157d365484c
hex4b409afb8

20200402872 has 192 divisors, whose sum is σ = 59817663360. Its totient is φ = 6121267200.

The previous prime is 20200402861. The next prime is 20200402883. The reversal of 20200402872 is 27820400202.

It is an interprime number because it is at equal distance from previous prime (20200402861) and next prime (20200402883).

It is a super-2 number, since 2×202004028722 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24604222 + ... + 24605042.

It is an arithmetic number, because the mean of its divisors is an integer number (311550330).

Almost surely, 220200402872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200402872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29908831680).

20200402872 is an abundant number, since it is smaller than the sum of its proper divisors (39617260488).

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

20200402872 is a wasteful number, since it uses less digits than its factorization.

20200402872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The spelling of 20200402872 in words is "twenty billion, two hundred million, four hundred two thousand, eight hundred seventy-two".