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30269688 = 2331279931
BaseRepresentation
bin111001101111…
…0000011111000
32002221212012120
41303132003320
530222112223
63000441240
7515200551
oct163360370
962855176
1030269688
11160a5079
12a179220
13636a977
14403d328
1529cdbe3
hex1cde0f8

30269688 has 32 divisors (see below), whose sum is σ = 76277760. Its totient is φ = 10009440.

The previous prime is 30269683. The next prime is 30269693. The reversal of 30269688 is 88696203.

It is an interprime number because it is at equal distance from previous prime (30269683) and next prime (30269693).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30269683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1918 + ... + 8013.

It is an arithmetic number, because the mean of its divisors is an integer number (2383680).

Almost surely, 230269688 is an apocalyptic number.

It is an amenable number.

30269688 is an abundant number, since it is smaller than the sum of its proper divisors (46008072).

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

30269688 is a wasteful number, since it uses less digits than its factorization.

30269688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10067 (or 10063 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 30269688 is about 5501.7895270539. The cubic root of 30269688 is about 311.6515669745.

The spelling of 30269688 in words is "thirty million, two hundred sixty-nine thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 24 127 254 381 508 762 1016 1524 3048 9931 19862 29793 39724 59586 79448 119172 238344 1261237 2522474 3783711 5044948 7567422 10089896 15134844 30269688