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154138088 = 23132364439
BaseRepresentation
bin10010010111111…
…11010111101000
3101202001000201002
421023333113220
5303424404323
623143414132
73551103116
oct1113772750
9352030632
10154138088
117a009255
1243754348
1325c1a590
1416684ab6
15d7ea828
hex92ff5e8

154138088 has 32 divisors (see below), whose sum is σ = 324777600. Its totient is φ = 68046528.

The previous prime is 154138079. The next prime is 154138091. The reversal of 154138088 is 880831451.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29828 + ... + 34611.

It is an arithmetic number, because the mean of its divisors is an integer number (10149300).

Almost surely, 2154138088 is an apocalyptic number.

It is an amenable number.

154138088 is an abundant number, since it is smaller than the sum of its proper divisors (170639512).

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

154138088 is a wasteful number, since it uses less digits than its factorization.

154138088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64481 (or 64477 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 154138088 is about 12415.2361234090. The cubic root of 154138088 is about 536.1710024668.

The spelling of 154138088 in words is "one hundred fifty-four million, one hundred thirty-eight thousand, eighty-eight".

Divisors: 1 2 4 8 13 23 26 46 52 92 104 184 299 598 1196 2392 64439 128878 257756 515512 837707 1482097 1675414 2964194 3350828 5928388 6701656 11856776 19267261 38534522 77069044 154138088