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87372049822 = 21913922374177
BaseRepresentation
bin101000101011111000…
…1111010110110011110
322100112002221000012021
41101113301322312132
52412414221043242
6104045502130354
76212106112141
oct1212761726636
9270462830167
1087372049822
1134066276242
1214b248809ba
138315544385
14432bca2058
1524157c9b67
hex1457c7ad9e

87372049822 has 32 divisors (see below), whose sum is σ = 139573324800. Its totient is φ = 40904206848.

The previous prime is 87372049769. The next prime is 87372049823. The reversal of 87372049822 is 22894027378.

It is a self number, because there is not a number n which added to its sum of digits gives 87372049822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87372049823) 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, 1140798 + ... + 1214974.

It is an arithmetic number, because the mean of its divisors is an integer number (4361666400).

Almost surely, 287372049822 is an apocalyptic number.

87372049822 is a deficient number, since it is larger than the sum of its proper divisors (52201274978).

87372049822 is a wasteful number, since it uses less digits than its factorization.

87372049822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74560.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 87372049822 in words is "eighty-seven billion, three hundred seventy-two million, forty-nine thousand, eight hundred twenty-two".

Divisors: 1 2 19 38 139 223 278 446 2641 4237 5282 8474 30997 61994 74177 148354 588943 1177886 1409363 2818726 10310603 16541471 20621206 33082942 195901457 314287949 391802914 628575898 2299264469 4598528938 43686024911 87372049822