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122030020 = 2257871643
BaseRepresentation
bin1110100011000…
…00011111000100
322111121202201101
413101200133010
5222214430040
620035305444
73011144440
oct721403704
9274552641
10122030020
1162978a62
1234a4b284
131c387c18
14122c7820
15aaa709a
hex74607c4

122030020 has 24 divisors (see below), whose sum is σ = 292872384. Its totient is φ = 41838816.

The previous prime is 122030011. The next prime is 122030039. The reversal of 122030020 is 20030221.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 122029979 and 122030006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435682 + ... + 435961.

It is an arithmetic number, because the mean of its divisors is an integer number (12203016).

Almost surely, 2122030020 is an apocalyptic number.

122030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122030020 is an abundant number, since it is smaller than the sum of its proper divisors (170842364).

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

122030020 is a wasteful number, since it uses less digits than its factorization.

122030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871659 (or 871657 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 122030020 is about 11046.7198751485. The cubic root of 122030020 is about 496.0082432293.

Adding to 122030020 its reverse (20030221), we get a palindrome (142060241).

The spelling of 122030020 in words is "one hundred twenty-two million, thirty thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 871643 1743286 3486572 4358215 6101501 8716430 12203002 17432860 24406004 30507505 61015010 122030020