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20072151000 = 23335311193557
BaseRepresentation
bin10010101100011001…
…001011011111011000
31220210212021220211000
4102230121023133120
5312101432313000
613115423505000
71310256316446
oct225431133730
956725256730
1020072151000
11857022a150
123a82158160
131b7b61a535
14d85b07b96
157c726e000
hex4ac64b7d8

20072151000 has 512 divisors, whose sum is σ = 79926912000. Its totient is φ = 4608576000.

The previous prime is 20072150999. The next prime is 20072151013. The reversal of 20072151000 is 15127002.

20072151000 = 3463 + 3473 + ... + 5543.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5641222 + ... + 5644778.

It is an arithmetic number, because the mean of its divisors is an integer number (156107250).

Almost surely, 220072151000 is an apocalyptic number.

20072151000 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 20072151000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39963456000).

20072151000 is an abundant number, since it is smaller than the sum of its proper divisors (59854761000).

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

20072151000 is a wasteful number, since it uses less digits than its factorization.

20072151000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617 (or 3597 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

Adding to 20072151000 its reverse (15127002), we get a palindrome (20087278002).

The spelling of 20072151000 in words is "twenty billion, seventy-two million, one hundred fifty-one thousand".