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30390802 = 2131168877
BaseRepresentation
bin111001111101…
…1101000010010
32010012000100021
41303323220102
530240001202
63003214054
7516213631
oct163735022
963160307
1030390802
1116178072
12a21732a
1363b0b30
144071518
152a04a37
hex1cfba12

30390802 has 8 divisors (see below), whose sum is σ = 49092876. Its totient is φ = 14026512.

The previous prime is 30390793. The next prime is 30390803. The reversal of 30390802 is 20809303.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23415921 + 6974881 = 4839^2 + 2641^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30390803) 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, 584413 + ... + 584464.

Almost surely, 230390802 is an apocalyptic number.

30390802 is a deficient number, since it is larger than the sum of its proper divisors (18702074).

30390802 is a wasteful number, since it uses less digits than its factorization.

30390802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168892.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 30390802 is about 5512.7853214142. The cubic root of 30390802 is about 312.0666702254.

The spelling of 30390802 in words is "thirty million, three hundred ninety thousand, eight hundred two".

Divisors: 1 2 13 26 1168877 2337754 15195401 30390802