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30495442 = 297191823
BaseRepresentation
bin111010001010…
…1001011010010
32010101022212211
41310111023102
530301323232
63005342334
7520130665
oct164251322
963338784
1030495442
111623974a
12a2679aa
136419653
14409b6dc
152a25a47
hex1d152d2

30495442 has 16 divisors (see below), whose sum is σ = 46513152. Its totient is φ = 14993280.

The previous prime is 30495427. The next prime is 30495457. The reversal of 30495442 is 24459403.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30495427) and next prime (30495457).

It is a super-3 number, since 3×304954423 (a number of 23 digits) contains 333 as substring.

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, 36643 + ... + 37465.

It is an arithmetic number, because the mean of its divisors is an integer number (2907072).

Almost surely, 230495442 is an apocalyptic number.

30495442 is a deficient number, since it is larger than the sum of its proper divisors (16017710).

30495442 is a wasteful number, since it uses less digits than its factorization.

30495442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 30495442 is about 5522.2678312447. The cubic root of 30495442 is about 312.4244237505.

The spelling of 30495442 in words is "thirty million, four hundred ninety-five thousand, four hundred forty-two".

Divisors: 1 2 97 191 194 382 823 1646 18527 37054 79831 157193 159662 314386 15247721 30495442