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30251485 = 511550027
BaseRepresentation
bin111001101100…
…1100111011101
32002220221020101
41303121213131
530221021420
63000221101
7515063515
oct163314735
962827211
1030251485
1116092430
12a16a791
1363625b4
144036845
1529c860a
hex1cd99dd

30251485 has 8 divisors (see below), whose sum is σ = 39602016. Its totient is φ = 22001040.

The previous prime is 30251461. The next prime is 30251513. The reversal of 30251485 is 58415203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30251485 - 25 = 30251453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274959 + ... + 275068.

It is an arithmetic number, because the mean of its divisors is an integer number (4950252).

Almost surely, 230251485 is an apocalyptic number.

It is an amenable number.

30251485 is a deficient number, since it is larger than the sum of its proper divisors (9350531).

30251485 is a wasteful number, since it uses less digits than its factorization.

30251485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550043.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 30251485 is about 5500.1349983432. The cubic root of 30251485 is about 311.5890827821.

Adding to 30251485 its reverse (58415203), we get a palindrome (88666688).

It can be divided in two parts, 3025 and 1485, that multiplied together give a cube (4492125 = 1653).

The spelling of 30251485 in words is "thirty million, two hundred fifty-one thousand, four hundred eighty-five".

Divisors: 1 5 11 55 550027 2750135 6050297 30251485