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1990602 = 233191193
BaseRepresentation
bin111100101111111001010
310202010121000
413211333022
51002144402
6110355430
722630335
oct7457712
93663530
101990602
11113a629
127bbb76
13549093
1439b61c
15294c1c
hex1e5fca

1990602 has 32 divisors (see below), whose sum is σ = 4469760. Its totient is φ = 656640.

The previous prime is 1990579. The next prime is 1990607. The reversal of 1990602 is 2060991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1990607) 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, 10218 + ... + 10410.

It is an arithmetic number, because the mean of its divisors is an integer number (139680).

21990602 is an apocalyptic number.

1990602 is an abundant number, since it is smaller than the sum of its proper divisors (2479158).

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

1990602 is a wasteful number, since it uses less digits than its factorization.

1990602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1990602 is about 1410.8869550747. The cubic root of 1990602 is about 125.7944494372.

The spelling of 1990602 in words is "one million, nine hundred ninety thousand, six hundred two".

Divisors: 1 2 3 6 9 18 27 54 191 193 382 386 573 579 1146 1158 1719 1737 3438 3474 5157 5211 10314 10422 36863 73726 110589 221178 331767 663534 995301 1990602