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30678088 = 237547823
BaseRepresentation
bin111010100000…
…1110001001000
32010201121102111
41311001301020
530323144323
63013312104
7521521330
oct165016110
963647374
1030678088
11163539a1
12a335634
13648181c
1441080c0
152a5ec0d
hex1d41c48

30678088 has 16 divisors (see below), whose sum is σ = 65738880. Its totient is φ = 13147728.

The previous prime is 30678083. The next prime is 30678091. The reversal of 30678088 is 88087603.

It is a super-2 number, since 2×306780882 = 1882290166671488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30678088.

It is not an unprimeable number, because it can be changed into a prime (30678083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273856 + ... + 273967.

It is an arithmetic number, because the mean of its divisors is an integer number (4108680).

Almost surely, 230678088 is an apocalyptic number.

It is an amenable number.

30678088 is an abundant number, since it is smaller than the sum of its proper divisors (35060792).

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

30678088 is a wasteful number, since it uses less digits than its factorization.

30678088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547836 (or 547832 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 30678088 is about 5538.7803711648. The cubic root of 30678088 is about 313.0469159736.

The spelling of 30678088 in words is "thirty million, six hundred seventy-eight thousand, eighty-eight".

Divisors: 1 2 4 7 8 14 28 56 547823 1095646 2191292 3834761 4382584 7669522 15339044 30678088