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30250490 = 253025049
BaseRepresentation
bin111001101100…
…1010111111010
32002220212212112
41303121113322
530221003430
63000212322
7515060564
oct163312772
962825775
1030250490
1116091706
12a16a0a2
136361cca
144036334
1529c8195
hex1cd95fa

30250490 has 8 divisors (see below), whose sum is σ = 54450900. Its totient is φ = 12100192.

The previous prime is 30250471. The next prime is 30250499. The reversal of 30250490 is 9405203.

It can be written as a sum of positive squares in 2 ways, for example, as 28121809 + 2128681 = 5303^2 + 1459^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30250499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512515 + ... + 1512534.

Almost surely, 230250490 is an apocalyptic number.

30250490 is a deficient number, since it is larger than the sum of its proper divisors (24200410).

30250490 is a wasteful number, since it uses less digits than its factorization.

30250490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025056.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30250490 is about 5500.0445452742. The cubic root of 30250490 is about 311.5856665912.

Adding to 30250490 its reverse (9405203), we get a palindrome (39655693).

It can be divided in two parts, 30250 and 490, that multiplied together give a square (14822500 = 38502).

The spelling of 30250490 in words is "thirty million, two hundred fifty thousand, four hundred ninety".

Divisors: 1 2 5 10 3025049 6050098 15125245 30250490