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30801774 = 2319270191
BaseRepresentation
bin111010101111…
…1111101101110
32010221220002110
41311133331232
530341124044
63020104450
7522545043
oct165377556
963856073
1030801774
1116428913
12a395126
1364c5c03
14413b1ca
152a866b9
hex1d5ff6e

30801774 has 16 divisors (see below), whose sum is σ = 64846080. Its totient is φ = 9726840.

The previous prime is 30801763. The next prime is 30801781. The reversal of 30801774 is 47710803.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134982 + ... + 135209.

It is an arithmetic number, because the mean of its divisors is an integer number (4052880).

Almost surely, 230801774 is an apocalyptic number.

30801774 is an abundant number, since it is smaller than the sum of its proper divisors (34044306).

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

30801774 is a wasteful number, since it uses less digits than its factorization.

30801774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270215.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 30801774 is about 5549.9345942092. The cubic root of 30801774 is about 313.4670595132.

The spelling of 30801774 in words is "thirty million, eight hundred one thousand, seven hundred seventy-four".

Divisors: 1 2 3 6 19 38 57 114 270191 540382 810573 1621146 5133629 10267258 15400887 30801774