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30257950 = 2521993041
BaseRepresentation
bin111001101101…
…1001100011110
32002221021002211
41303123030132
530221223300
63000311034
7515121412
oct163331436
962837084
1030257950
1116097278
12a17247a
136365518
144038d42
1529ca4ba
hex1cdb31e

30257950 has 24 divisors (see below), whose sum is σ = 56581200. Its totient is φ = 12038400.

The previous prime is 30257947. The next prime is 30258017. The reversal of 30257950 is 5975203.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8430 + ... + 11470.

It is an arithmetic number, because the mean of its divisors is an integer number (2357550).

Almost surely, 230257950 is an apocalyptic number.

30257950 is a deficient number, since it is larger than the sum of its proper divisors (26323250).

30257950 is a wasteful number, since it uses less digits than its factorization.

30257950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 30257950 is about 5500.7226797940. The cubic root of 30257950 is about 311.6112776147.

The spelling of 30257950 in words is "thirty million, two hundred fifty-seven thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 50 199 398 995 1990 3041 4975 6082 9950 15205 30410 76025 152050 605159 1210318 3025795 6051590 15128975 30257950