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30541078 = 2171316857
BaseRepresentation
bin111010010000…
…0010100010110
32010110122111001
41310200110112
530304303303
63010333514
7520411021
oct164402426
963418431
1030541078
111626aa67
12a28a29a
136434359
1440b01b8
152a3431d
hex1d20516

30541078 has 16 divisors (see below), whose sum is σ = 48883824. Its totient is φ = 14260480.

The previous prime is 30541067. The next prime is 30541081. The reversal of 30541078 is 87014503.

It is an alternating number because its digits alternate between odd and even.

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, 1026 + ... + 7882.

It is an arithmetic number, because the mean of its divisors is an integer number (3055239).

Almost surely, 230541078 is an apocalyptic number.

30541078 is a deficient number, since it is larger than the sum of its proper divisors (18342746).

30541078 is a wasteful number, since it uses less digits than its factorization.

30541078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7007.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30541078 is about 5526.3982845973. The cubic root of 30541078 is about 312.5801923263.

The spelling of 30541078 in words is "thirty million, five hundred forty-one thousand, seventy-eight".

Divisors: 1 2 17 34 131 262 2227 4454 6857 13714 116569 233138 898267 1796534 15270539 30541078