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400222248 = 23316675927
BaseRepresentation
bin10111110110101…
…110100000101000
31000220002101201020
4113312232200220
51304424102443
6103414052440
712626555466
oct2766564050
91026071636
10400222248
11195a07998
12b204a120
1364bbb7ca
143b221836
1525209583
hex17dae828

400222248 has 16 divisors (see below), whose sum is σ = 1000555680. Its totient is φ = 133407408.

The previous prime is 400222247. The next prime is 400222253. The reversal of 400222248 is 842222004.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 16675927 = 400222248 / (4 + 0 + 0 + 2 + 2 + 2 + 2 + 4 + 8).

It is not an unprimeable number, because it can be changed into a prime (400222247) 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, 8337940 + ... + 8337987.

It is an arithmetic number, because the mean of its divisors is an integer number (62534730).

Almost surely, 2400222248 is an apocalyptic number.

It is an amenable number.

400222248 is an abundant number, since it is smaller than the sum of its proper divisors (600333432).

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

400222248 is a wasteful number, since it uses less digits than its factorization.

400222248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16675936 (or 16675932 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 400222248 is about 20005.5554284304. Note that the first 3 decimals coincide. The cubic root of 400222248 is about 736.9427359011.

The spelling of 400222248 in words is "four hundred million, two hundred twenty-two thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 12 24 16675927 33351854 50027781 66703708 100055562 133407416 200111124 400222248