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30073797 = 3213401641
BaseRepresentation
bin111001010111…
…0001111000101
32002120220111100
41302232033011
530144330142
62552330313
7513423465
oct162561705
962526440
1030073797
1115a80986
12a0a3999
1362cc760
143dcbba5
152990b4c
hex1cae3c5

30073797 has 24 divisors (see below), whose sum is σ = 46971288. Its totient is φ = 18432000.

The previous prime is 30073777. The next prime is 30073807. The reversal of 30073797 is 79737003.

It can be written as a sum of positive squares in 4 ways, for example, as 14699556 + 15374241 = 3834^2 + 3921^2 .

It is not a de Polignac number, because 30073797 - 27 = 30073669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30073717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46597 + ... + 47237.

It is an arithmetic number, because the mean of its divisors is an integer number (1957137).

Almost surely, 230073797 is an apocalyptic number.

It is an amenable number.

30073797 is a deficient number, since it is larger than the sum of its proper divisors (16897491).

30073797 is a wasteful number, since it uses less digits than its factorization.

30073797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 27783, while the sum is 36.

The square root of 30073797 is about 5483.9581508250. The cubic root of 30073797 is about 310.9778246751.

The spelling of 30073797 in words is "thirty million, seventy-three thousand, seven hundred ninety-seven".

Divisors: 1 3 9 13 39 117 401 641 1203 1923 3609 5213 5769 8333 15639 24999 46917 74997 257041 771123 2313369 3341533 10024599 30073797