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19782000552 = 23317327117581
BaseRepresentation
bin10010011011000110…
…010101111110101000
31220001122022202020010
4102123012111332220
5311003143004202
613030540531520
71300134141666
oct223306257650
956048282203
1019782000552
118431472896
123a00b50ba0
131b3348a992
14d59379c36
157aba5876c
hex49b195fa8

19782000552 has 64 divisors (see below), whose sum is σ = 49927253760. Its totient is φ = 6531321600.

The previous prime is 19782000523. The next prime is 19782000569. The reversal of 19782000552 is 25500028791.

It is a self number, because there is not a number n which added to its sum of digits gives 19782000552.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116402 + ... + 1133982.

It is an arithmetic number, because the mean of its divisors is an integer number (780113340).

Almost surely, 219782000552 is an apocalyptic number.

19782000552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is a pronic number, being equal to 140648×140649.

It is an amenable number.

19782000552 is an abundant number, since it is smaller than the sum of its proper divisors (30145253208).

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

19782000552 is a wasteful number, since it uses less digits than its factorization.

19782000552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18034 (or 18030 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 19782000552 in words is "nineteen billion, seven hundred eighty-two million, five hundred fifty-two", and thus it is an aban number.

Divisors: 1 2 3 4 6 8 12 24 173 271 346 519 542 692 813 1038 1084 1384 1626 2076 2168 3252 4152 6504 17581 35162 46883 52743 70324 93766 105486 140648 140649 187532 210972 281298 375064 421944 562596 1125192 3041513 4764451 6083026 9124539 9528902 12166052 14293353 18249078 19057804 24332104 28586706 36498156 38115608 57173412 72996312 114346824 824250023 1648500046 2472750069 3297000092 4945500138 6594000184 9891000276 19782000552