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87874946490 = 2353659800537
BaseRepresentation
bin101000111010111000…
…0010100010110111010
322101211011012210201210
41101311300110112322
52414431441241430
6104211425023550
76230423502162
oct1216560242672
9271734183653
1087874946490
11342a4130a21
1215045184bb6
1383957a1a76
1443789ad5a2
152444a162b0
hex1475c145ba

87874946490 has 32 divisors (see below), whose sum is σ = 210957773760. Its totient is φ = 23426885504.

The previous prime is 87874946459. The next prime is 87874946491. The reversal of 87874946490 is 9464947878.

It is not an unprimeable number, because it can be changed into a prime (87874946491) 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, 290499 + ... + 510038.

It is an arithmetic number, because the mean of its divisors is an integer number (6592430430).

Almost surely, 287874946490 is an apocalyptic number.

87874946490 is an abundant number, since it is smaller than the sum of its proper divisors (123082827270).

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

87874946490 is a wasteful number, since it uses less digits than its factorization.

87874946490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804206.

The product of its (nonzero) digits is 97542144, while the sum is 66.

The spelling of 87874946490 in words is "eighty-seven billion, eight hundred seventy-four million, nine hundred forty-six thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 3659 7318 10977 18295 21954 36590 54885 109770 800537 1601074 2401611 4002685 4803222 8005370 12008055 24016110 2929164883 5858329766 8787494649 14645824415 17574989298 29291648830 43937473245 87874946490