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99870424 = 2341437397
BaseRepresentation
bin1011111001111…
…10011011011000
320221220221110121
411330332123120
5201031323144
613524323024
72321612263
oct574763330
9227827417
1099870424
1151413145
1229543474
13178c9834
14d399cda
158b7b384
hex5f3e6d8

99870424 has 64 divisors (see below), whose sum is σ = 201025440. Its totient is φ = 46448640.

The previous prime is 99870389. The next prime is 99870443. The reversal of 99870424 is 42407899.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1029544 + ... + 1029640.

Almost surely, 299870424 is an apocalyptic number.

It is an amenable number.

99870424 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

99870424 is a wasteful number, since it uses less digits than its factorization.

99870424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 99870424 is about 9993.5190998967. The cubic root of 99870424 is about 463.9583172029.

The spelling of 99870424 in words is "ninety-nine million, eight hundred seventy thousand, four hundred twenty-four".

Divisors: 1 2 4 8 41 43 73 82 86 97 146 164 172 194 292 328 344 388 584 776 1763 2993 3139 3526 3977 4171 5986 6278 7052 7081 7954 8342 11972 12556 14104 14162 15908 16684 23944 25112 28324 31816 33368 56648 128699 171011 257398 290321 304483 342022 514796 580642 608966 684044 1029592 1161284 1217932 1368088 2322568 2435864 12483803 24967606 49935212 99870424