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145094949 = 33172831117
BaseRepresentation
bin10001010010111…
…11100100100101
3101010000120212000
420221133210211
5244121014244
622221515513
73411200226
oct1051374445
9333016760
10145094949
11749a1a8a
1240712b99
13240a23cc
14153ad24d
15cb11169
hex8a5f925

145094949 has 32 divisors (see below), whose sum is σ = 228608640. Its totient is φ = 90637056.

The previous prime is 145094923. The next prime is 145094981. The reversal of 145094949 is 949490541.

145094949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145094949 - 27 = 145094821 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145094909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129339 + ... + 130455.

It is an arithmetic number, because the mean of its divisors is an integer number (7144020).

Almost surely, 2145094949 is an apocalyptic number.

It is an amenable number.

145094949 is a deficient number, since it is larger than the sum of its proper divisors (83513691).

145094949 is a wasteful number, since it uses less digits than its factorization.

145094949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 145094949 is about 12045.5364762222. The cubic root of 145094949 is about 525.4734341630.

The spelling of 145094949 in words is "one hundred forty-five million, ninety-four thousand, nine hundred forty-nine".

Divisors: 1 3 9 17 27 51 153 283 459 849 1117 2547 3351 4811 7641 10053 14433 18989 30159 43299 56967 129897 170901 316111 512703 948333 2844999 5373887 8534997 16121661 48364983 145094949