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12401970 = 235773809
BaseRepresentation
bin101111010011…
…110100110010
3212100002022020
4233103310302
511133330340
61121452310
7210262230
oct57236462
925302266
1012401970
117000869
1241a1096
132752c59
14190b950
15114e9d0
hexbd3d32

12401970 has 64 divisors (see below), whose sum is σ = 34525440. Its totient is φ = 2792448.

The previous prime is 12401969. The next prime is 12401989. The reversal of 12401970 is 7910421.

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 12401970.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14926 + ... + 15734.

It is an arithmetic number, because the mean of its divisors is an integer number (539460).

Almost surely, 212401970 is an apocalyptic number.

12401970 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 12401970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17262720).

12401970 is an abundant number, since it is smaller than the sum of its proper divisors (22123470).

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

12401970 is a wasteful number, since it uses less digits than its factorization.

12401970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 12401970 is about 3521.6430824262. The cubic root of 12401970 is about 231.4711621703.

The spelling of 12401970 in words is "twelve million, four hundred one thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 73 105 146 210 219 365 438 511 730 809 1022 1095 1533 1618 2190 2427 2555 3066 4045 4854 5110 5663 7665 8090 11326 12135 15330 16989 24270 28315 33978 56630 59057 84945 118114 169890 177171 295285 354342 413399 590570 826798 885855 1240197 1771710 2066995 2480394 4133990 6200985 12401970