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30890034 = 2327614019
BaseRepresentation
bin111010111010…
…1100000110010
32011010101011100
41311311200302
530401440114
63022025230
7523363260
oct165654062
964111140
1030890034
111648915a
12a418216
136527136
144161430
152aa2909
hex1d75832

30890034 has 48 divisors (see below), whose sum is σ = 77762880. Its totient is φ = 8678880.

The previous prime is 30890021. The next prime is 30890053. The reversal of 30890034 is 43009803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5677 + ... + 9695.

It is an arithmetic number, because the mean of its divisors is an integer number (1620060).

Almost surely, 230890034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30890034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38881440).

30890034 is an abundant number, since it is smaller than the sum of its proper divisors (46872846).

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

30890034 is a wasteful number, since it uses less digits than its factorization.

30890034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 30890034 is about 5557.8803513570. The cubic root of 30890034 is about 313.7661788560.

Adding to 30890034 its reverse (43009803), we get a palindrome (73899837).

The spelling of 30890034 in words is "thirty million, eight hundred ninety thousand, thirty-four".

Divisors: 1 2 3 6 7 9 14 18 21 42 61 63 122 126 183 366 427 549 854 1098 1281 2562 3843 4019 7686 8038 12057 24114 28133 36171 56266 72342 84399 168798 245159 253197 490318 506394 735477 1470954 1716113 2206431 3432226 4412862 5148339 10296678 15445017 30890034