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30089740 = 2251504487
BaseRepresentation
bin111001011001…
…0001000001100
32002121201100211
41302302020030
530200332430
62552532204
7513521122
oct162621014
962551324
1030089740
1115a9195a
12a0b1064
136306aa5
143dd3912
15299572a
hex1cb220c

30089740 has 12 divisors (see below), whose sum is σ = 63188496. Its totient is φ = 12035888.

The previous prime is 30089737. The next prime is 30089789. The reversal of 30089740 is 4798003.

It is a happy number.

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, 752224 + ... + 752263.

It is an arithmetic number, because the mean of its divisors is an integer number (5265708).

Almost surely, 230089740 is an apocalyptic number.

It is an amenable number.

30089740 is an abundant number, since it is smaller than the sum of its proper divisors (33098756).

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

30089740 is a wasteful number, since it uses less digits than its factorization.

30089740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504496 (or 1504494 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 30089740 is about 5485.4115615877. The cubic root of 30089740 is about 311.0327677829.

The spelling of 30089740 in words is "thirty million, eighty-nine thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 1504487 3008974 6017948 7522435 15044870 30089740