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30103420 = 2251679013
BaseRepresentation
bin111001011010…
…1011101111100
32002122102010111
41302311131330
530201302140
62553115404
7513606034
oct162653574
962572114
1030103420
1115aa1166
12a0b8b64
136310099
143dd88c4
1529997ea
hex1cb577c

30103420 has 24 divisors (see below), whose sum is σ = 63602784. Its totient is φ = 11967936.

The previous prime is 30103399. The next prime is 30103427. The reversal of 30103420 is 2430103.

It is a self number, because there is not a number n which added to its sum of digits gives 30103420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103427) 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, 1167 + ... + 7846.

It is an arithmetic number, because the mean of its divisors is an integer number (2650116).

Almost surely, 230103420 is an apocalyptic number.

It is an amenable number.

30103420 is an abundant number, since it is smaller than the sum of its proper divisors (33499364).

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

30103420 is a wasteful number, since it uses less digits than its factorization.

30103420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9189 (or 9187 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30103420 is about 5486.6583637037. The cubic root of 30103420 is about 311.0798966226.

Adding to 30103420 its reverse (2430103), we get a palindrome (32533523).

The spelling of 30103420 in words is "thirty million, one hundred three thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 167 334 668 835 1670 3340 9013 18026 36052 45065 90130 180260 1505171 3010342 6020684 7525855 15051710 30103420