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20125932830 = 257327569771
BaseRepresentation
bin10010101111100110…
…010101110100011110
31220221121111022121122
4102233212111310132
5312204214322310
613125024330542
71311511415003
oct225746256436
956847438548
1020125932830
118598623243
123a98173a52
131b897cb0c3
14d8cd078aa
157cbd44555
hex4af995d1e

20125932830 has 16 divisors (see below), whose sum is σ = 36722936304. Its totient is φ = 7940093760.

The previous prime is 20125932823. The next prime is 20125932887. The reversal of 20125932830 is 3823952102.

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, 13784156 + ... + 13785615.

It is an arithmetic number, because the mean of its divisors is an integer number (2295183519).

Almost surely, 220125932830 is an apocalyptic number.

20125932830 is a deficient number, since it is larger than the sum of its proper divisors (16597003474).

20125932830 is a wasteful number, since it uses less digits than its factorization.

20125932830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27569851.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 20125932830 in words is "twenty billion, one hundred twenty-five million, nine hundred thirty-two thousand, eight hundred thirty".

Divisors: 1 2 5 10 73 146 365 730 27569771 55139542 137848855 275697710 2012593283 4025186566 10062966415 20125932830