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1422972 = 223229247
BaseRepresentation
bin101011011011001111100
32200021221200
411123121330
5331013342
650255500
715044415
oct5333174
92607850
101422972
11892111
12587590
133aa8c5
1429080c
151d194c
hex15b67c

1422972 has 54 divisors (see below), whose sum is σ = 3804528. Its totient is φ = 448224.

The previous prime is 1422961. The next prime is 1422973. The reversal of 1422972 is 2792241.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422973) 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 17 ways as a sum of consecutive naturals, for example, 30253 + ... + 30299.

21422972 is an apocalyptic number.

1422972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1422972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902264).

1422972 is an abundant number, since it is smaller than the sum of its proper divisors (2381556).

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

1422972 is a wasteful number, since it uses less digits than its factorization.

1422972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 81 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1422972 is about 1192.8839004698. The cubic root of 1422972 is about 112.4774473311.

The spelling of 1422972 in words is "one million, four hundred twenty-two thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 9 12 18 29 36 47 58 87 94 116 141 174 188 261 282 348 423 522 564 841 846 1044 1363 1682 1692 2523 2726 3364 4089 5046 5452 7569 8178 10092 12267 15138 16356 24534 30276 39527 49068 79054 118581 158108 237162 355743 474324 711486 1422972