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30676540 = 2253893943
BaseRepresentation
bin111010100000…
…1011000111100
32010201112022011
41311001120330
530323122130
63013301004
7521513656
oct165013074
963645264
1030676540
1116352814
12a334764
136480bcb
1441076d6
152a5e52a
hex1d4163c

30676540 has 24 divisors (see below), whose sum is σ = 64602720. Its totient is φ = 12235968.

The previous prime is 30676537. The next prime is 30676543. The reversal of 30676540 is 4567603.

It is an interprime number because it is at equal distance from previous prime (30676537) and next prime (30676543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30676543) 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, 5809 + ... + 9751.

It is an arithmetic number, because the mean of its divisors is an integer number (2691780).

Almost surely, 230676540 is an apocalyptic number.

It is an amenable number.

30676540 is an abundant number, since it is smaller than the sum of its proper divisors (33926180).

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

30676540 is a wasteful number, since it uses less digits than its factorization.

30676540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341 (or 4339 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 30676540 is about 5538.6406274464. The cubic root of 30676540 is about 313.0416504914.

The spelling of 30676540 in words is "thirty million, six hundred seventy-six thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 389 778 1556 1945 3890 3943 7780 7886 15772 19715 39430 78860 1533827 3067654 6135308 7669135 15338270 30676540