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30825460 = 2251541273
BaseRepresentation
bin111010110010…
…1101111110100
32011000002120201
41311211233310
530342403320
63020410244
7523004101
oct165455764
964002521
1030825460
1116444696
12a3a6984
136503923
144145aa8
152a8d70a
hex1d65bf4

30825460 has 12 divisors (see below), whose sum is σ = 64733508. Its totient is φ = 12330176.

The previous prime is 30825449. The next prime is 30825469. The reversal of 30825460 is 6452803.

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 14227984 = 4074^2 + 3772^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30825469) 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, 770617 + ... + 770656.

It is an arithmetic number, because the mean of its divisors is an integer number (5394459).

Almost surely, 230825460 is an apocalyptic number.

It is an amenable number.

30825460 is an abundant number, since it is smaller than the sum of its proper divisors (33908048).

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

30825460 is a wasteful number, since it uses less digits than its factorization.

30825460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541282 (or 1541280 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30825460 is about 5552.0680831560. The cubic root of 30825460 is about 313.5473890684.

The spelling of 30825460 in words is "thirty million, eight hundred twenty-five thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 1541273 3082546 6165092 7706365 15412730 30825460