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30431050 = 2521346817
BaseRepresentation
bin111010000010…
…1011101001010
32010021001112221
41310011131022
530242243200
63004124254
7516442156
oct164053512
963231487
1030431050
11161a5331
12a23668a
1363c6250
144082066
152a1191a
hex1d0574a

30431050 has 24 divisors (see below), whose sum is σ = 60957036. Its totient is φ = 11235840.

The previous prime is 30431021. The next prime is 30431059. The reversal of 30431050 is 5013403.

It can be written as a sum of positive squares in 6 ways, for example, as 9114361 + 21316689 = 3019^2 + 4617^2 .

It is not an unprimeable number, because it can be changed into a prime (30431059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22759 + ... + 24058.

Almost surely, 230431050 is an apocalyptic number.

30431050 is an abundant number, since it is smaller than the sum of its proper divisors (30525986).

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

30431050 is a wasteful number, since it uses less digits than its factorization.

30431050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46842 (or 46837 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30431050 is about 5516.4345369088. The cubic root of 30431050 is about 312.2043710862.

Adding to 30431050 its reverse (5013403), we get a palindrome (35444453).

The spelling of 30431050 in words is "thirty million, four hundred thirty-one thousand, fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 46817 93634 234085 468170 608621 1170425 1217242 2340850 3043105 6086210 15215525 30431050