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250151420 = 22512507571
BaseRepresentation
bin11101110100100…
…00000111111100
3122102201000020102
432322100013330
51003014321140
640453340232
76125152301
oct1672200774
9572630212
10250151420
11119227512
126b937678
133ca965bc
14253190a8
1516e63e15
hexee901fc

250151420 has 12 divisors (see below), whose sum is σ = 525318024. Its totient is φ = 100060560.

The previous prime is 250151383. The next prime is 250151449. The reversal of 250151420 is 24151052.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 12507571 = 250151420 / (2 + 5 + 0 + 1 + 5 + 1 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 250151392 and 250151401.

It is a congruent 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, 6253766 + ... + 6253805.

It is an arithmetic number, because the mean of its divisors is an integer number (43776502).

Almost surely, 2250151420 is an apocalyptic number.

250151420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250151420 is an abundant number, since it is smaller than the sum of its proper divisors (275166604).

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

250151420 is a wasteful number, since it uses less digits than its factorization.

250151420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12507580 (or 12507578 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 250151420 is about 15816.1758968469. The cubic root of 250151420 is about 630.0876841086.

The spelling of 250151420 in words is "two hundred fifty million, one hundred fifty-one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 12507571 25015142 50030284 62537855 125075710 250151420