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30801430 = 2511280013
BaseRepresentation
bin111010101111…
…1111000010110
32010221212121201
41311133320112
530341121210
63020103114
7522544042
oct165377026
963855551
1030801430
1116428630
12a394a9a
1364c59ca
14413b022
152a8653a
hex1d5fe16

30801430 has 16 divisors (see below), whose sum is σ = 60483024. Its totient is φ = 11200480.

The previous prime is 30801371. The next prime is 30801443. The reversal of 30801430 is 3410803.

It is a junction number, because it is equal to n+sod(n) for n = 30801398 and 30801407.

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, 139897 + ... + 140116.

It is an arithmetic number, because the mean of its divisors is an integer number (3780189).

Almost surely, 230801430 is an apocalyptic number.

30801430 is a deficient number, since it is larger than the sum of its proper divisors (29681594).

30801430 is a wasteful number, since it uses less digits than its factorization.

30801430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280031.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30801430 is about 5549.9036027664. The cubic root of 30801430 is about 313.4658925558.

The spelling of 30801430 in words is "thirty million, eight hundred one thousand, four hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 280013 560026 1400065 2800130 3080143 6160286 15400715 30801430