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1409970 = 235431093
BaseRepresentation
bin101011000001110110010
32122122010010
411120032302
5330104340
650115350
714661462
oct5301662
92578103
101409970
11883371
1257bb56
133a4a03
14289ba2
151ccb80
hex1583b2

1409970 has 32 divisors (see below), whose sum is σ = 3465792. Its totient is φ = 366912.

The previous prime is 1409957. The next prime is 1409977. The reversal of 1409970 is 799041.

It is a super-7 number, since 7×14099707 (a number of 44 digits) contains 7777777 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409977) 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, 744 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (108306).

21409970 is an apocalyptic number.

1409970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1409970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1732896).

1409970 is an abundant number, since it is smaller than the sum of its proper divisors (2055822).

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

1409970 is a wasteful number, since it uses less digits than its factorization.

1409970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 1409970 is about 1187.4215763578. The cubic root of 1409970 is about 112.1338217588.

The spelling of 1409970 in words is "one million, four hundred nine thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 43 86 129 215 258 430 645 1093 1290 2186 3279 5465 6558 10930 16395 32790 46999 93998 140997 234995 281994 469990 704985 1409970