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30078874 = 272148491
BaseRepresentation
bin111001010111…
…1011110011010
32002121011110101
41302233132122
530200010444
62552410014
7513444340
oct162573632
962534411
1030078874
1115a84781
12a0a690a
136301b67
143dcd990
1529923d4
hex1caf79a

30078874 has 8 divisors (see below), whose sum is σ = 51563808. Its totient is φ = 12890940.

The previous prime is 30078863. The next prime is 30078883. The reversal of 30078874 is 47887003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×300788742 = 1809477322215752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074232 + ... + 1074259.

It is an arithmetic number, because the mean of its divisors is an integer number (6445476).

Almost surely, 230078874 is an apocalyptic number.

30078874 is a deficient number, since it is larger than the sum of its proper divisors (21484934).

30078874 is a wasteful number, since it uses less digits than its factorization.

30078874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148500.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 30078874 is about 5484.4210268724. The cubic root of 30078874 is about 310.9953232479.

It can be divided in two parts, 3007 and 8874, that added together give a square (11881 = 1092).

The spelling of 30078874 in words is "thirty million, seventy-eight thousand, eight hundred seventy-four".

Divisors: 1 2 7 14 2148491 4296982 15039437 30078874