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1900074 = 231128789
BaseRepresentation
bin111001111111000101010
310120112102010
413033320222
5441300244
6104420350
722102401
oct7177052
93515363
101900074
111088610
127776b6
13516b07
14376638
15277eb9
hex1cfe2a

1900074 has 16 divisors (see below), whose sum is σ = 4145760. Its totient is φ = 575760.

The previous prime is 1900049. The next prime is 1900079. The reversal of 1900074 is 4700091.

It is a super-2 number, since 2×19000742 = 7220562410952, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1900074.

It is not an unprimeable number, because it can be changed into a prime (1900079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14329 + ... + 14460.

It is an arithmetic number, because the mean of its divisors is an integer number (259110).

21900074 is an apocalyptic number.

1900074 is an abundant number, since it is smaller than the sum of its proper divisors (2245686).

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

1900074 is a wasteful number, since it uses less digits than its factorization.

1900074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28805.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1900074 is about 1378.4317175689. The cubic root of 1900074 is about 123.8578409003.

The spelling of 1900074 in words is "one million, nine hundred thousand, seventy-four".

Divisors: 1 2 3 6 11 22 33 66 28789 57578 86367 172734 316679 633358 950037 1900074