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87404404 = 2222397987
BaseRepresentation
bin1010011010110…
…10111101110100
320002110121022011
411031122331310
5134333420104
612401214004
72110632223
oct515327564
9202417264
1087404404
114537924a
1225331304
13151536a9
14b872cba
157a17904
hex535af74

87404404 has 12 divisors (see below), whose sum is σ = 153645184. Its totient is φ = 43505784.

The previous prime is 87404377. The next prime is 87404417. The reversal of 87404404 is 40440478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48102 + ... + 49885.

Almost surely, 287404404 is an apocalyptic number.

It is an amenable number.

87404404 is a deficient number, since it is larger than the sum of its proper divisors (66240780).

87404404 is a wasteful number, since it uses less digits than its factorization.

87404404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98214 (or 98212 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 87404404 is about 9349.0322493828. The cubic root of 87404404 is about 443.7902656314.

The spelling of 87404404 in words is "eighty-seven million, four hundred four thousand, four hundred four".

Divisors: 1 2 4 223 446 892 97987 195974 391948 21851101 43702202 87404404