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30419620 = 22571119753
BaseRepresentation
bin111010000001…
…0101010100100
32010020110212121
41310002222210
530241411440
63003555324
7516363640
oct164025244
963213777
1030419620
1116197790
12a22bb44
1363c0c9a
14407bc20
152a0d34a
hex1d02aa4

30419620 has 48 divisors (see below), whose sum is σ = 79648128. Its totient is φ = 9480960.

The previous prime is 30419591. The next prime is 30419629. The reversal of 30419620 is 2691403.

It is not an unprimeable number, because it can be changed into a prime (30419629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8337 + ... + 11416.

It is an arithmetic number, because the mean of its divisors is an integer number (1659336).

Almost surely, 230419620 is an apocalyptic number.

It is an amenable number.

30419620 is an abundant number, since it is smaller than the sum of its proper divisors (49228508).

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

30419620 is a wasteful number, since it uses less digits than its factorization.

30419620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19780 (or 19778 counting only the distinct ones).

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

The square root of 30419620 is about 5515.3984443556. The cubic root of 30419620 is about 312.1652778702.

The spelling of 30419620 in words is "thirty million, four hundred nineteen thousand, six hundred twenty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 1540 19753 39506 79012 98765 138271 197530 217283 276542 395060 434566 553084 691355 869132 1086415 1382710 1520981 2172830 2765420 3041962 4345660 6083924 7604905 15209810 30419620